Tag Archives: Caliber SRT4

Caliber SRT4 suspension comparison – BC Coilover equipped versus STOCK

Our friend Noah is deployed to Iraq, and he wants us to take care of, and modify his Caliber SRT4 while he’s deployed. So, for kicks, we took some photos of our project Caliber SRT4 versus Noah’s bone stock Caliber SRT4 just to show you the height difference between the two cars.

Our project car is equipped with BC coilovers and we estimate its lowered about 2 inches compared to stock.

Anyways, enough talking, onto the photos !

Dodge Caliber SRT4 suspension

Dodge Caliber SRT4 suspension

Dodge Caliber SRT4 suspension

MPx lightweight crank pulley now available for the 08-09 Dodge Caliber SRT4

MPx lightweight Crank pulley for the 08-09 Dodge Caliber SRT4

# Improves throttle response and peppiness!
# Will NOT AFFECT your cars AC/Power Steering/Alternator
# Uses the factory belt
# Can be installed in less than 30-45 minutes with only simple hand tools
# It costs just about $100 !

MPx pulley weighing in at 1.4 lbs, and the Factory crank pulley weighing in at 4.2 lbs.

More details here:


New wheels for the Caliber SRT4 project car ..

We were getting a little tired of the the factory Caliber SRT4 wheels, and decided to get some new wheels for it. We wanted to get a black spoke wheel with a polished lip.

In this blog post: we tried fitting a different set of wheels on the Caliber SRT4 but they didnt fit due to clearance issues with the Caliper.


Heres the specs of the wheels.

Petrol Vengeance

19×8 inch

40 offset

5×114.3 fitment

We’ve got tons of clearance between the wheels and the caliper, and if we had to order wheels again we would more than likely get a wheel with less offset for more of a lip.

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

Photos of our color matched MPx Dual/Triple Caliber SRT4 pillar pods being painted

Today we painted a small batch of Caliber SRT4 Dual/Triple pillar pods and I thought it would be good to show/discuss whats involved in us making these.

First off, Modern Performance worked with a manufacturer to produce these for the Caliber SRT4, and the finished product looks great, however theres one major issue. The manufacturer couldnt produce the pillars in the same color as the factory A pillar. So the a pillar pods are delivered to us in black.

We then had Sherwin Williams paint match the factory A pillar with a special automotive grade paint that flexes with heat and cold. This paint is expensive, and it requires a multi step process to make sure the paint adheres to the pillar perfectly.

The first step is to clean the pillars with a special cleaning agent. Then, we spray a primer on the pillar to prep the surface. Lastly in the painting process we spray the pillar with the custom matched paint.

Mpx Caliber SRT4 Gauge pillar pods being painted

Then all of the pillar pods are moved outside to bake in the sun for a few hours, followed by curing indoors overnight.
Mpx Caliber SRT4 Gauge pillar pods curing outdoors

At this point, we compare the painted pods to the factory pillar to make sure the color matches perfectly.

To make sure the pillar pods arent damaged in transit, we then take each pillar and wrap them in bubble wrap. Its quite a process, and it involves a lot of work, but we do it all the right way to make sure they look good, and will last in your Caliber SRT4.

Link to the Caliber pods on our website :



Caliber SRT4 Valve covers – slowly but surely getting the color matched for powdercoating

I know its been a while since we last gave you an update on the powdercoated valve cover for the 08-09 Caliber SRT4.

The delay we have had, is because our powdercoater has had a tough time making an exact match of the Inferno Red color.

Heres what the powdercoater has come up with..

Here we have a budweiser (or is it bud lite) can that has been powdercoated with a sample color match next to our project 2008 Dodge Caliber SRT4.

Dodge Caliber SRT4 Valve Cover powdercoat matching

Its very very close, but we are going to make another change to try and match it a little better.

Washed, Cleaned, and Paint Sealanted the 08 Caliber SRT4 this weekend

Most of you out there are familiar with waxing your cars, and how your car needs to be waxed every 2-4 months. The process of waxing your car can be very time consuming, and most of us drivers want to take care of our cars but dont have the time to wash, claybar, wax, and then buff our cars. That process for one person can take up to 5-6 hours !

So, another option to keep your car shiny, and protected from bugs, bird droppings is paint sealant. Paint sealant usually lasts about a year, and is very durable, easy to work with.

So, this weekend, I took our project Caliber SRT-4, washed it, used paint cleaner from Meguiars, and then used Paint Sealant from Griots Garage. The whole process took about 2-3 hours, and now the cars protected! Most people will never even know it has paint sealant versus wax protection too!

Onto the photos!

2008 Dodge Caliber SRT4 freshly detailed

2008 Dodge Caliber SRT4 freshly detailed

It looks GREAT now ! Look how glossy it looks and the reflection on the side of the car!

2008-2009 Dodge Caliber SRT4 owners who change their own oil, take notice!

Just a note for those of you Caliber SRT-4 owners who change your own oil..

About every 4,000-5,000 miles your Caliber SRT-4 will make a BING noise and your display will read CHANGE OIL SOON.

Now, for those of you who go to dealerships to change your oil, no problem, they will reset the message for you. BUT for those of you

who change your own oil, you may be wondering how to erase/reset this message.

Its actually quite easy to do and theres no special tools involved !

Put your key in the ignition, turn it to the ON position but dont start the car. Then, push the accelerator pedal to the floor and release 5 times.

Then, start your car, and the message will be reset ! PRESTO !

Caliber SRT-4 owners – difference between Mopar stage 1 and Aem FIC packages.

Caliber SRT-4 owners – difference between Mopar stage 1 and Aem FIC packages.

We’ve gotten a good amount of questions from 08-09 Caliber SRT-4 owners asking us what the difference is between the Mopar stage 1 upgrade package and the AEM FIC.

The difference boils down to what your ultimate goal power wise.

If your happy with 320-330 horsepower at the engine, and a maximum of 15 psi, then the Mopar stage 1 kit is a great kit that improves throttle response and increases boost and power.

If you want more than 320-330 horsepower, and more than 15 psi of boost, then youll have to move to a AEM FIC kit. Why ? Well, it has to do with the PCM and the drive by wire system. The pcm will try to regulate boost level to limit torque steer and maintain smooth drivability. Therefore, if you are giving 100% throttle with the gas pedal, and you go over 15 psi, (or any boost level that the PCM is programmed to not allow the engine to exceed) then the pcm will cut back on the throttle to regulate the boost pressure.

Example: You have a boost controller on your 08 Caliber SRT-4, and want to do 18 psi. As soon as you floor the car, and are giving 100% throttle and exceed say 15 psi, the pcm will cut the throttle back to 60-70% to regulate the boost level to 15 psi.

The way to bypass this from happening, is to limit the voltage from the map sensor going to the pcm. The AEM FIC will do that for you, and then you can increase the boost level in your car to whatever you desire because the pcm thinks that your running at say 14 psi. The major problem with you running say, 20 psi, when the pcm is seeing 14 psi, is that the pcm will only deliver 14 psi worth of fuel, therefore making the car run excessively lean. The other major benefit of the FIC is that it will control fuel, so you can use the FIC to deliver extra fuel to make up for the pcm not putting out enough fuel.

Wiring up the FIC involves quite a bit of work. The FIC has MAP sensor inputs, and output (to modify the map sensor voltage), the FIC has input and outputs for the injector wiring, an more.

After the FIC is wired up, youll need to then use a laptop to program the FIC for the fuel curve as well.

So, as you can see, there is quite a bit of work involved. However, there is also QUITE A bit of power that can be made with the FIC as well!

More information on the AEM FIC here:


More information on the Caliber Mopar Stage 1 kit here:


How To: Sealing headlights/taillights to prevent condensation/moisture buildup.

Sometimes, regardless of the manufacturer of headlights/taillights you buy, condensation or moisture can leak into your new lights.

With installation usually requiring 45 mins – 2 hours for headlights or taillights, its pretty frustrating to have a leak develop in  your new lights. This procedure will take about an extra 20-30 minutes to do, but will guarantee you wont have to remove the lights due to fogging/condensation buildup.

So, to properly demonstrate the procedure of how to seal the taillights/headlights, we decided to demonstrate on a set of 08+ Dodge Caliber headlights.

First off, heres the headlight we’ll be working with.

Dodge Caliber SRT-4 Depo Headlight

This headlight has a clear plastic outer shell on the front, and a black plastic basket surround. The two are sealed together with a heavy duty industrial glue/sealer. However, sometimes with extreme heat, the glue/sealer can come loose, and holes can form that will allow water to enter.

This is the sealer we are using. This is GE Silicone 2, a premium grade silicone sealant. This is a great all purpose silicone that can be used indoors/outdoors and it will never crack, and is permanently flexible so it will seal, but yet flex with heat/cold expansion/contraction. You can buy this in small tubes for about $4 at your local hardware store.

Heres what the initial bead of silicone looks like that we used to go around the headlight. We made sure to apply a consistent bead of silicone across the entire headlight.

The last step of sealing a headlight or taillight, is to make sure that the silicone has a good seal against the two surfaces its sealing. So, with our pointer finger, we ran our finger along the bead, pushing the silicone into the crack, and sealing the silicone to both the inner and outer casings. Notice how there are no globs, and how the silicone nicely fills the void.

Most silicone sealers will take about 1 hour to cure, and about 12-14 hours to fully cure, so be sure to allocate enough time for the silicone to fully dry and seal.

Additional photos of the MPx Caliber SRT-4 Intercooler

For a while, we only had one image posted of the MPx Intercooler for the Caliber SRT-4 and it didnt do a good job of displaying the quality of the MPx intercooler.

So, to better show the quality of the cast end tanks and the welds, we took some photos to post on the site.

One thing to notice in these photos, is the consistency of the welds holding the inner core to the cast end tanks. Another thing that you should know is that most manufacturers of intercoolers use aluminum sheet, bend the sheet and then weld it all together. The problem with this style of fabrication is that the more welds you have, the higher chance of leaking. When we use cast end tanks, we have a solid, very strong piece that only has welds holding it to the inner core, making it very strong.

Here they are:

Caliber SRT-4 MPx intercooler Cast End tanks

Caliber SRT4 MPx intercooler Cast End tanks

Heres a photo of our Caliber SRT4 with the MPx Intercooler installed:
2008 Caliber SRT-4 with MPx intercooler installed