Well neither one would need E85 to hit 400whp.

But the price difference is negotiable.

If you pieced together a S256 setup it would be the following:

S256-$730
ZZP hotside piping w/BOV flange-$260
BOV-$200
Wastegate-$200
Turbo manifold-$300

For a total of $1690 roughly with all brand new parts. I'm sure you could piece it together for cheaper finding used parts on the Cobalt forums and what not.

The Hahn 20G is supposed to be in the $1200 range by itself. Add in hotside piping with a BOV flange and a BOV and you're looking at roughly $1600 also.

Only difference is, the S256 is good for about 425-440~ on pump gas. The 20G is going to be limited to about 400~ on pump gas and have to do so at higher boost. So if you are looking for a more reliable 400whp, the Hahn 20G is not the way to go. It's an older tech turbo. There are better ones on the market right now.

For the sake of arguements sake anyways lol. Not trying to start a battle but I think that if 400whp is what you are looking for, there are better ways to do it.

 

I'll be awaiting the EFR.

 

I want one for my HHR and the wife's GSX. Lightweight material is where it's at when your attempting to "spin" something to great RPMs.

http://www.perrinperformance.com/sha...otechbrief.pdf

And

http://www.turbodriven.com/en/perfor...Reference.aspx


http://www.youtube.com/watch?v=ssTjG...layer_embedded

 

I got my kit today. Hopefully I will be installing it in the next few weeks

 

You going to be the first HHR in the 10's, watch out for Lady boxers Hubby He is building one that will be close.

 

Hell he already had 400 H/P and 385 Tq.....He's going for more now....Did you check out his build up.....

 

We, can all only wish for a wife like you, told you it will be fast.

 

So did you basically switch over to Hahn everything including the 20g?

 

Definitely can't wait to see this thing go in.

 

Chevy13, did you stick the Xa coilovers in yet, I must have missed your report ??