Currently have a FP Red on the car. Looking for more power and going to build the motor. Should i go to the FP Black or the EF3/EF4? Looking to keep it stock frame.

 

Why are you not happy with the Red?

 

I am. But here in CA theres only so much you can do with 91. So if i build the motor id like to be able to be in the mid to high 400's.

 

Doesnt they have E85 out there?

 

^CA does have E85. Depending on where you live, it may not be easily accessible or worth the hassle to drive and fill up somewhere remote or out of the way.

 

All the E85 stations are 45 miles away minimum. I also don't want to be tied down to run only
E85

 

EF3 wouldn't be a significant change, EF4 would be though

 

Sounds good. Been eyeing the EF4 turbos for a while now.

 

Stock frame about the largest would be FP Black, EF4, GTX 3076R?

 

ATP turbo also makes GTX3576 and GT3582 versions of the Garrett bolt-on. For maximum pump gas numbers, need to step up the of the GT35 size turbos. A compromise in spoolup and power would be the GTX3576 in the small 0.73 A/R housing.

 

Ya im looking to be as high as i can be on pump with a built motor. Only have ****ty 91. Im in a debate between FP Black and EF4. I have a stock turbo lying around i could send out to FP

 

This

 

We do upgrades as well

 

Either the ef4 or black will get you as high as a stock frame will go. The only difference is FP has ball bearing blacks, Map doesn't have ball bearing ef4's. So if you care about that, only 1 choice. If you don't care, the ef4 will be cheaper b/c fp doesn't offer jb blacks anymore.

 

With crappy 91 oct, I throw in the GTX3576 into the mix also. Then you would also have to chose between the small A/R or big A/R. Of course, the bigger one will make more power at the expense of spool.