RPi GT Intercooler Upgrades for RL/GXP

[RPIpower]

The stock 2.0 turbo intercooler has a tube and fin core design at 2.75x6.5x26.25" which gives it a flow folume of 470 cu in. Our GT intercoolers are a larger superior bar and plate core design giving much more cooling efficiency.
All upgrate intercoolers are a bolt on application.

*****Absolutely no cutting, trimming or modification is needed for install****

Guaranteed thermal efficiency.

Dyno of stage 2 shown:


Stage 2: $899
45% larger, B/P design and 680 cu in.

Stage 3: $1025
66% larger, B/P design and 780 cu in.

Stage 4: $1075
69% larger, B/P design and 794 cu in.

[YellowSky]

YUMMY ANOTHER new toy!!!!!

[GhostRL]

Pics next to a stock one for comparison? Also whats the power gain expected to be?

[SKY Spy]

Any chance in an increase in lag due to the larger volume?

BA...

[BlueSkyRL]

Eloy,
I'm interested! Pics of side by side, install, and of course any noticable gains

[RPIpower]

pics and dyno results in 1-2 weeks. Each of these coolers are designed for a good balance between pressure drop and cooling efficiency.

[Driving Like Mad]

i want this! when will it be available??

[RPIpower]

Originally Posted by Tom Walton

i want this! when will it be available??

ETA, about 2 weeks. We will run some final tests, etc.

[RPIpower]

Originally Posted by SKY Spy

Any chance in an increase in lag due to the larger volume?

BA...

in theory, larger internal volumes will increase the interval in transient response. However, in the real world, the volume changes aren't enough to create a difference that human beings can feel. you should feel no difference in transient response (lag) at all.

[lesderk]

Eloy

Have you been able to test your new intercoolers for ther RL to see what the temp drop is? Even though they have more flow and are made from a more efficient design, I am anxious to see how much of a greater temp drop it has over the stock one. Any testing which carefully controls all the variables so that the only difference in the test was the intercooler itself, would give us an accurate measure of how much greater of a temperature drop your cooler has over stock.

Les

[RPIpower]

Originally Posted by lesderk

Eloy

Have you been able to test your new intercoolers for ther RL to see what the temp drop is? Even though they have more flow and are made from a more efficient design, I am anxious to see how much of a greater temp drop it has over the stock one. Any testing which carefully controls all the variables so that the only difference in the test was the intercooler itself, would give us an accurate measure of how much greater of a temperature drop your cooler has over stock.

Les

Yep, we are testing them. It basically the same way we test our Noble intercooler upgrades. We have a temp probe before and after the intercooler. This allows us to measure temp differences and efficiency between the stock and ours. We have been able to see minimal difference in intercooler outlet temps vs. ambient.

[RPIpower]

[JustMike]

Originally Posted by RPIpower

Yep, we are testing them. It basically the same way we test our Noble intercooler upgrades. We have a temp probe before and after the intercooler. This allows us to measure temp differences and efficiency between the stock and ours. We have been able to see minimal difference in intercooler outlet temps vs. ambient.

So help me understand I'm gonna pay $900 for "minimal difference"?

Originally Posted by RPIpower

Stage 2: $899 45% larger, B/P design and 680 cu in.

[SKY Spy]

Originally Posted by JustMike

So help me understand I'm gonna pay $900 for "minimal difference"?

I believe he means "minimal difference" from ambient temperature as compared to Stage 2 Intercooler OUTLET (After the air has been cooled by the intercooler). In other words, if I understood correctly, the charged air's temperature as it comes out of the Intercooler is basically the same as ambient temps.

Am I right Eloy??? Do I get a price?

BA...

[Mallard]

Originally Posted by JustMike

So help me understand I'm gonna pay $900 for "minimal difference"?

He said a minimal difference between ambient temp and intake temps, meaning that's the best you can get. As you know, compressing air creates heat, and the cooler the air the more power you make (and better resistance to detonation...although not as much of a concern on this engine.)

[RPIpower]

Originally Posted by Mallard

He said a minimal difference between ambient temp and intake temps, meaning that's the best you can get. As you know, compressing air creates heat, and the cooler the air the more power you make (and better resistance to detonation...although not as much of a concern on this engine.)

Yes, minimal different between intercooler outlet temp vs. ambient. You CANT get cooler than ambient as the air flowing through the cooler is what cools the intercooler. We work closely with Corky Bell and Gerhards company to develope our intercooler upgrades. You are not telling anything we don't already know. I guess you just misunderstood our explanation.

We are testing the intercooler today. What we do is measure inlet temperatures and temperatures on the surface area of the cooler. So far with the same flow rate vs. stock, we have seen 220F temperatures down to 96F at the center point of the stock intercooler, while our stage 2 brought temps down to 83F. The intercooler is being installed on the redline now for dyno testing.

[YellowSky]

thats a BAD SOM B

[RPIpower]

Incredible results. Over 120F difference in pre intercooler and post intercooler temps. This is what the redline pissed out....



Test fitting was perfect and is a complete bolt on replacement of the factory cooler. Steve will be back after putting some miles on the car to see if the ECU will make adjustments on the new aftercooler.

In case some of you are wondering how we come up with numbers, efficiency, etc., this is how we do our intercooler testing.

1. measure surface area temps in 10% increments on the intercooler
2. 250F+induced into the intercooler
- surface temps measured without a fan
3. test fit on vehicle
4. measure pre and post intercooler temps for efficiency
5. dyno test

Below is a picture of the temp probes installed into the intercooler couplers.


Probes are nearly reach center of diameter for maximum accuracy.



Test fitting: Completely bolts to stock brackets, etc. No cutting or modification involved.



After adding 25whp, you also have one scary and mean looking redline.



Here is a pic of the stock intercooler:



Stage 2 installed:

[williams.2277]

Have you measured the pressure drops across the intercooler? When the engine is running the outlet of the turbo is at a higher pressure then the pressure at the throttle plate. I worry that the core that is more efficient at cooling the intake air down may also be more restrictive to the air flowing through it. i.e. with the (possibly) more restrictive intercooler the turbo may have to pressurize air to a higher pressure to see the same pressure at the throttle plate. With this turbo being so small I worry about increasing its outlet pressure and pushing its operating condition off its map in to inefficient areas.

[RPIpower]

Originally Posted by williams.2277