Turbine housing on the current setup is the ATP 1.06 A/R T4 TS.

There was no difference in spool and the only thing you felt was additional pull on the topend. When I spoke with the Garrett engineers about upgrading they recommended that I try the larger turbine wheel first. Based on results they had seen from an EVO X (GTX3076r vs GTX3576r) they lost no spool and gained 40whp up top. I was somewhat skeptical, but obviousy my results confirmed that as well. My intent is to redyno the new setup in the next 2 weeks and I expect to see over 500hp@wheels on 93 octane and hopefully full boost (33psi) in 3rd gear by 4K rpm.

New Setup Changes:
-Curt Brown 10:1 2L (no balance shafts)
-Bosch P100-T COPs (dwell set for 90mJ)

 

Anybody have top-mount kit with 7670 IWG ? What a result?

 

Just RT/Ernie's top mount 1.05 that I can think of for the 7670. A 0.92 divided is going to be too small (read spool fast) for making good power out the top before backpressure becomes an issue. The 1.05 was on the border as far as that goes.

aaron

 

If you want 600whp you should go with the 8374 twinscroll IWG top mount. That would murder the 35r setup. Just my 2 cents.

 

I am going to amend my prior statement that the 0.92 is too small. I have been told that it is actually VERY responsive which I dont discount at all. I will have to do some testing to see what the backpressure is at a given boost level before I make a statement about it hurting power

aaron

 

I should have some backpressure data on the 7670, and Aaron will have his hands on the 8374 in not too long

 

Anyone using/used a smaller-than 7670 EFR unit?
I am building a new VIII engine, 2.2 on pump 98oct, and am after lightning fast spool and power. Have seen the 7670 charts, great unit ;-), but I think a step smaller would be the best here!

 

You want the 7163!!!! Use the Divided T4 IWG unit or the EWG unit in the 1.05 A/R. Would be PERFECT for what you're looking for.

Google for EFR dyno Perrin Performance. Jeff Perrin does a cool comparison of the 7163 against everything

 

Thank you, and cheers for you beautiful and competent build!

 

Here is a video I put together for a customer using the new Contour+2 camera's.
Video overlay using the GPS data in the video - It can give us lap times, speed and track position.

He's using EFR 8374 with IWG, approx 550whp with 28psi and E85. Very reliable 2.0 4G63.

 

^ nice vid mike! That car does very well under braking! Car sounds familiar

 

Very nice. What's the approximate weight of the car? He was easily outbraking everyone...

l8r)

 

Man, that is a nice vid. Good car, good driver, good camera, thanks for the 1080 HD. Seems to be getting real good throttle modulation.
Can you make it show tach instead of speedo?
Darn those Porsches get in the way!

 

I agree! Awesome video, driver and these EFR's look the world. I am saving up to put one on my new 2.2 motor!

 

Does he run dysump or wet sump?