Tag Archives: Dodge SRT4

A Customer stopped by with a 03-05 SRT4 painted Candy Apple Red..(photo)

A local customer stopped by the Modern Performance shop to pickup a new clutch the other day.

He parked his SRT4 outside, and we noticed it wasnt the factory red color! After talking with him he told us the car used to be silver, and that he painted it himself.

It looked great, especially considering it was painted by himself and not a body shop! Anyways, enjoy the photo.

Candy Apple Red SRT4

MPx Blow off plate for Neon SRT4 and Caliber SRT4 now available! $34.99!

Mpx Blow off plate for Neon/Caliber SRT4

Introducing the MPx blow off plate for the 08+ Dodge Caliber SRT4, 03-05 Dodge Neon SRT4 and the 02+ Plymouth GT Cruiser.

This piece mounts under the factory turbo relief valve and allows the pressurized air to be released when ever you push in the clutch or release the gas.

MPx Blow off plate for Neon/Caliber SRT4

Link to the product here:

Want to install a blow off valve onto your Neon SRT4 ,Caliber SRT4? Then you’ll need an uppipe!

Want to install a blow off valve onto your Neon SRT4 ,Caliber SRT4? Then you’ll need an uppipe!

If you have decided to install a new blow off valve on your Neon SRT4 or Caliber SRT4 so that you can turn up the boost without the factory blow off valve leaking, or if you just want a cool sounding blow off valve, youll need to mount a uppipe with flange onto your car.

Why you might ask ? Well the answers simple! The factory blow off valve has a flange that does not work with any aftermarket blow off valves from Hks, Greddy or TurboXs. So, you have to have a pressure pipe with a flange to mount the blow off valve onto. Thats where the uppipes shown below come into action.

The first one is a AGP uppipe for the 03-05 Neon SRT4. The second one shown is the MPx uppipe for the Caliber SRT4.
AGP Uppipe for Neon SRT4
MPx uppipe for Caliber SRT4

Both of the pieces above will replace one of the pressurized sections of piping on your car, and allow you to mount a new blow off valve.

Want more details ? Check out the link below, that will show you all of the uppipes we have for the Neon SRT4 and the Caliber SRT4.

New Aeroforce Interceptor Scangauges in stock for Neon SRT, Caliber SRT, Cobalt SS Supercharged!

We’ve received the new version of Aeroforce Interceptor Scangauges for the 03-05 Dodge Neon SRT4, 05-07 Chevy Cobalt SS Supercharged, and 08-09 Dodge Caliber SRT4.

These have the exact same functionality as the previous gauges, except now they are offered with interchangeable faces! Now, you simply purchase ONE gauge, and you get a black bezel and a silver bezel, as well as a black face and a silver face! This way you can make whatever combination of face you want within seconds!

So, we decided to snap a few photos to show how easy it is to swap the faces.

Heres where you start. A complete gauge with bezel and face.
Aeroforce Interceptor Scangauge Swap Gauge Face

Simply unscrew the bezel counterclockwise, and then remove the bezel, clear shield, and face.
Aeroforce Interceptor Scangauge Swap Gauge Face

Then, install the new face, clear shield, and the bezel of your choice. Presto! Within seconds youve changed the look of the Aeroforce Scangauge!
Aeroforce Interceptor Scangauge Swap Gauge Face

As you may have noticed, the faces are now customizable with SRT or SS logos on the face. Here is what the gauges look like with the new SRT or SS logo faces.

Aeroforce Scangauge Interceptor Gauges for 03-05 SRT4 and 08-09 Caliber SRT4

Aeroforce Scangauge Interceptor Gauges for 05-07 Cobalt SS Supercharged

More information on these gauges, pricing, etc are available on the specific product pages listed below.

03-05 SRT4

08-09 Caliber SRT4

05-07 Cobalt SS Supercharged

Headlight comparison for 03-05 Neon and SRT4 owners

I talked to a customer with a 2003-2005 SRT4 today that asked me:
“Whats the difference in all of the headlights you offer?”

So, I thought it would be good to take some photos and show the difference between the different models of headlights we offer and explain some of the differences.

First, heres the lineup of headlights we will be discussing today. From left to right, we have the Depo Factory style headlight, the Depo Projector style headlight, and the Halo Projector style headlights.

03-05 Neon/SRT4 headlight comparison

Here we see the backsides of the headlights, from left to right, the Halo Projector style headlights, Depo Projector style headlights, and Depo factory style headlights.

03-05 Neon/SRT4 headlight comparison

Here we have a backside closeup view of the Depo factory style headlight. The main plug in the center is the headlight plug, and the turn signal receptacle cannot be seen, off to the side.  The Depo factory style headlights have headlight bulbs, and turn signals preinstalled, ready to go. It also has factory style adjustments for light adjustment.

03-05 Neon/SRT4 headlight comparison

Here we have a backside closeup view of the Depo projector style headlight. The Depo projector light has a headlight bulb, and turn signal bulb preinstalled. The adjustment for light output is quite a bit different, and harder to adjust than a factory style light because youll need to remove the light to make adjustments to heigth of the light output.

03-05 Neon/SRT4 Depo Factory Style headlight

Here we have a backside closeup view of the Halo Projector style style headlights.This light is the most complicated headlight out of the three, because you have seperate wiring for the turn signals and halo lights that need to be connected. It comes with a bulb and wiring for the headlight, and its ready to connect. The turn signal bulb is not preinstalled, and you have to transfer the bulb and socket wiring from your factory headlight over to this one (thats easy). For those of you thinking about getting this headlight, even though it looks intimidating, dont worry as we include a 8 page installation instruction set with each headlight purchased at MP.

03-05 Neon/SRT4 Depo Projector Style headlight

Photos of final 2.4 Cam gears installed on SRT4 motor

For those of you who are following our MPx 2.4 cam gear project, heres an update!

We have taken the cam gears and installed them onto our SRT4 motor we are swapping into a 95 Nitro Yellow Green Neon ACR.

They fit great, look great, and most importantly, because of the latest revision, they are stronger than any other cam gear design. So,
if your concerned about cracking cam gears like some SRT4 owners have had, this shouldnt be a concern with the MPx 2.4 cam gears!

Here are some of the benefits of these cam gears over other brand 2.4 cam gears.

– Solid inner design means great strength, no having to worry about spokes breaking or cracking.
– These were designed so that you can use the factory plastic timing cover
– These were designed so that you DO NOT HAVE TO TRIM THE MOTOR MOUNT (unlike Fidanza)

Here are some photos of the cam gears installed.

MPx 2.4 Cam gears for SRT4 / Stratus / PT Cruiser

MPx 2.4 Cam gears for SRT4 / Stratus / PT Cruiser

MPx 2.4 Cam gears for SRT4 / Stratus / PT Cruiser

Link to the other threads showing prototype cam gears, and revision of the design:

We made a revision to the prototype 2.4 Cam Gears to strengthen them further

After posting some photos of our prototype 2.4 Cam gears we are designing for use with the 2.4 03-05 Dodge SRT4 and the 95-01 Dodge Stratus/Pt Cruiser with the 2.4 motor, we got feedback from some customers that they were concerned about installing cam gears on their cars due to failures of other brands of cam gears.

So, even though we had done some stress testing and failure analysis testing of our cam gears that showed there would be no problems, we decided to make our cam gears even stronger to put everyone at ease.

First off, we scrapped all of the inner sections that were already built for the 2.4 cam gear production. This is pretty costly to do, but we want customers who are considering the cam gears to have 100% faith in the strength of the cam gears.

So, here’s a photo of all of our machined cam gear inner sections in the recycle aluminum container at our machine shop.

Heres the revision we have come up with of our prototype cam gears. We have designed the cam gear so that the slots are only cut 40% into the thickness of the cam gear. This is a great design, because the cam gear is essentially a solid cam gear, however you have the look of a slotted cam gear, and the weight of the cam gear is reduced by the unnecessary aluminum being cut out.

MPx 2.4 SRT4/Stratus Cam Gear revision 2

We plan on having our full production run finished by next week, and we will test fit/take photos and make a follow up post then.

3 bar MAP Sensors now available for 03-05 Dodge SRT4

SRT4 3 bar MAP Sensor

Interested in getting a 3 bar map sensor for your high boost 03-05 Dodge SRT4 ?

Well, up until August 2009, we could get the 3 bar map sensors from Mopar that were used in the stage 2 and stage 3 kits. But, now that the stage 2 and stage 3 kits are discontinued, Mopar no longer offers the stage 2/3 map sensors.

So, to fill the need, we found another Mopar 3 bar map sensor that could be used, but the angle for the sensor was incorrect. So, a adaptor was made out of aluminum that would allow the new Mopar 3 bar map sensor to be mounted onto the 03-05 Dodge SRT4 intake manifold.

The adaptor has a male threaded port with a rubber o ring to seal itself tightly to the intake manifold, and its held securely onto the intake manifold with allen head screws.

Pictured below are photos of the map sensor and adapter installed onto a SRT4 intake manifold. Notice how the plug is facing upwards like the factory map sensor does, so the factory wiring is kept in place, unmodified. The primary reason this adaptor was designed was not only to make it easier to install, but to keep the wiring from having to be cut and extended. If the factory wiring is cut, the voltage output from the sensor will be modified, and could create incorrect readings from the map sensor to the PCM.

SRT4 3 bar MAP Sensor
SRT4 3 bar MAP Sensor

Product is in our shopping cart here:

MPx Underdrive pulley for 95-05 Neon, 03-05 SRT4 has been Revised/Improved!

Introducing the new VERSION2 MPx pulley for the 95-99 Neon. This pulley, is a redesign of the famous MPx pulley that has been out for the 95-99 Neon since 2001.

MPx Underdrive pulley Revision 2

This underdrive pulley creates more power over the stock pulley by reducing overall weight, and size of the crank pulley. This allows your car to rev faster, and overall be much more peppy.

We took the same measurements of our MPx pulley, machined out some material where we could to make it lighter, and then inserted a stainless steel center hub sleeve for maximum strength. The reason we switched to a stainless steel center hub was to improve the overall strength of the pulley, and to make it easier to remove.

Even though stainless steel weighs nearly 4 times the weight of aluminum for the same size, because of weight reduction and improvement in design of the pulley, we were able to increase the overall weight of the pulley by only .05 lbs, or 1/20th of a pound compared to the older design!

Older version on the left, revised pulley on the right
MPx Underdrive pulley Revision 2
MPx Underdrive pulley Revision 2

95-99 Neon MPx underdrive pulley REVISION2 with belts

00-05 Neon MPx underdrive pulley REVISION2 with belts :

03-05 SRT4 MPx underdrive pulley REVISION2 with belts

Diablosport Predator 03-05 SRT4 PACKAGE DEAL with PC USB Update kit now available!

Diablosport Predator 03-05 SRT4 WITH PC USB Update kit !

We’ve taken the Diablosport Predator, and the Diablosport Predator PC USB Update kit and packaged them both together to save you money and TIME !

Why are we offering them both together, when most other companies offer them individually ?

Well, all of the Predators we have sold recently have come from the factory needing a software flash update. So, for customers that have ordered a Diablosport Predator all by itself, they would receive them from us, try to flash their factory pcm, and then get the message that their Predator needs to be updated. They could not complete the pcm flash then, and would have to order the Predator USB Update kit to flash their Predator, wait a few days to get the pc update kit, and then flash their predator with the new software and then flash their factory SRT4 pcm.

So to save our customers time, and to make sure that when you get the Diablosport Predator for your 03-05 SRT4 you can flash your SRT4 pcm immediately, we are now packaging the update kit along with the predator.

And, for a limited time, we are offering both as a package price to save you money!

Heres the link to the package:

Photo of prototype MPx 2.4 Cam Gears for 03-05 SRT4 and 2.4 Stratus/Breeze/PT Cruiser motors

MPx 2.4 Cam Gear for 03-05 Dodge SRT4 and 2.4 Stratus/Breeze

Feast your eyes on the prototype MPx 2.4 Cam gear for the 03-05 SRT4, 95-99 Dodge Stratus/Breeze/01-07 Pt Cruiser and GT Cruiser.

After dealing with some quality issues with various cam gears, and long delays with some manufacturers, we decided to step up to the plate.

We took aim with three goals in mind 1) Improve on the quality of the cam gears currently in the market. 2) Improve on the pricing of the cam gear sets for the SRT4/Stratus/Breeze/Pt Cruiser and 3) Improve on the availability of the cam gears in the market. We cannot accept manufacturers being out of stock of cam gears for 1.5 – 3 months!


We designed these cam gears to be ULTRA STRONG – you cant see it in the photo above, but the center section of the cam gear is ultra thick and strong. Also, whereas some cam gear manufacturers use locking systems with thin aluminum inner sections, we designed ours with thick inner sections that the adjustment screws thread into. We improved on the track where the adjustment bolt rides on by making it extra wide, and using bolts with extra wide heads for superior strength. Lastly, we use grade 8 bolts for the adjustment screws, and we anodize all of the wear surfaces and aluminum machined surfaces with a hard coat for protection and durability.


We designed the cam gear to look great, when its moving, and or when its sitting still.


Youll be amazed at the affordable price for this great looking, super strong pair of cam gears!

We’ll update you when these become available in the next week or two!

Hondata Intake Manifold Heatshield gasket for 95-99 Dohc Neon, 03-05 SRT-4

One part that customers arent familiar with, and is frequently overlooked in a car buildup, is the Hondata intake manifold heatshield gasket. We carry it for the 95-99 Dodge Neon Dohc engine, and for the 03-05 SRT-4.

Here we have a photo showing the Hondata gasket on top, and the factory 03-05 SRT4 gasket on the bottom.

Hondata Intake Manifold Gasket for 95-99 Neon, 03-05 SRT4

As you can see in the photo above, the gaskets are identical in size. The difference, is in the material, and thickness of the gaskets.

The factory 95-99 Dodge Neon Dohc and 03-05 Dodge SRT4 both have aluminum intake manifolds that absorb a LOT of heat from the engine cylinder heads, therefore heating up the incoming air into the head. This can make a difference in as much as 3-4% of your cars horsepower, because the hotter the incoming air, the less timing, boost pressures your pcm will allow into the engine.

Sound like hogwash ? Well, think back to a day where it was cool, say 60-70 degrees outside with low humidity, and think about how great your car ran that day. Next, think about how your car ran at 90-100 degrees. Theres a NOTICEABLE difference in power! Thats because the pcm makes adjustments based on the incoming air temperature, so if you have a way to keep your incoming air cooler, then youll make more power !

Hondata Intake Manifold Gasket for 95-99 Neon, 03-05 SRT4

The Hondata gasket keeps the air cooler, by using plastic (great insulator) thats 3 times thicker than the factory intake manifold gasket which is made out of a paper type material.

Hondata Intake Manifold Gasket for 95-99 Neon, 03-05 SRT4

The gasket material is thick enough to help insulate from heat, HOWEVER, its not too thick where you wont be able to reuse your factory bolts! You can use the same factory bolts, and it will seal just as well, if not better the intake manifold to the head. We have had cars with 25+ psi of boost that have not had any leaks with the Hondata!

For more details and photos, heres a link to our website withthe Hondata listings:

Motor Mount inserts – using them with worn/broken motor mounts

Motor Mount inserts – using them with worn/broken motor mounts (pertains to 95-05 Neons and 03-05 SRT-4’s)

We get calls all the time from customers who state pretty much exactly the same story.

“Ive got a 1996/2000/2003 Dodge/Plymouth Neon and or 2003-2005 Dodge SRT-4 and Ive got a lot of movement from my engine. I think my motor mounts are shot, and I want to use the Prothane motor mount inserts with my factory motor mounts to prevent the engine movement.”

Now, it sounds like a good idea, but heres the problem.

Prothane motor mount inserts are meant to be used with new, or good condition motor mounts to prevent flexing of the engine. They are NOT designed to be used with worn out or failing motor mounts. Why ? Well, when the motor mounts are failing, they will have way too much movement, and a motor mount insert wont fix it.

It would be like using a band aid on a major cut on your arm (that really requires stitches). It might work for a little while, but its ultimately the wrong way of fixing the problem.

Bottom line :

If you have a failing set of motor mounts with your 95-05 Neon or 03-05 Neon SRT4, and you’d like to use motor mount inserts, REPLACE your motor mounts and then install the inserts at the same time. It will make a drastic difference, and the combo of solid motor mounts and new inserts will last a LONG time.

AGP GT3071R Ball Bearing Turbo kit for 03-05 SRT-4 Customer

We received a GT3071R Ball Bearing Turbo kit for a customer and I thought it would be a great opportunity to snap a photo to share it with you guys.

The customer that bought this lives in Huixguilucan, Mexico, an area southwest of Mexico City, about 14 hours southeast of the Texas border. Its quite fascinating thinking of a 03-05 SRT-4 in Mexico, touring around with 400-500 horsepower! This particular area looks especially mountainous, so I can only imagine this customer flying around the mountain roads with his SRT4 in Mexico!

Anyways, onto the turbo kit. This is a ball bearing turbo kit, which will produce super fast spool up time compared to an old conventional design turbo. This kit from AGP runs about $2500 (as of 8-9-09) and will be good to make at LEAST 500 horsepower if not more.

This kit comes with an external wastegate, 38mm size with a dump tube.

AGP GT3071R Turbo kit for 03-05 Dodge SRT-4

Heres a photo of the turbo, with its 4 inch inlet. KEEP small children, and animals away from this inlet! Hehe!
GT3071R for 03-05 Dodge SRT4

More details on the turbo kit here

Interested in any other AGP Turbo kit ? We can get any kit listed on AGP’s website. Just spec it out the way you want it, and call Modern Performance to order !