4.2 Supercharged Stock Vs. 1.5 Pulley

Reply Subscribe

Thread Tools

Search this Thread

Oct 26, 2010 | 07:26 AM

#21

Michael Star

Veteran member

Joined: Sep 2010

Posts: 2,327

Likes: 251

From: Bowling Green, KY

Quote:

Originally Posted by Mafioso

I'm just not sold on tuning the STR nor the pretuned ecu's companies advertise

I'm right there with you. No tuner will give straight answers about their tune so how can you believe what they state?

Oct 26, 2010 | 08:53 AM

#22

JagV8

Veteran Member

Joined: May 2009

Posts: 27,531

Likes: 4,915

From: Yorkshire, England

Didn't Brutal say the stock tune is good for plenty more power? If so, I'd be inclined to leave it be.

Oct 26, 2010 | 08:59 AM

#23

Mafioso

Veteran Member

Joined: Feb 2010

Posts: 1,080

Likes: 43

From: Carrollton TX

X2!!!

Oct 27, 2010 | 02:18 PM

#24

qwiketz

Senior Member

Joined: Jan 2010

Posts: 696

Likes: 36

From: Laguna Hills, CA

so are you guys seeing that the afr is staying at 11.0-11.5 at wot on the top end? I thought they got a bit rich up there?

I haven't run mine on the auto enginuity software yet so I have no real world experience.... yet.

Oct 27, 2010 | 04:22 PM

#25

Mafioso

Veteran Member

Joined: Feb 2010

Posts: 1,080

Likes: 43

From: Carrollton TX

that is a bit rich, optimal AFR for forced induction is 12.5:1

Oct 28, 2010 | 10:37 PM

#26

qwiketz

Senior Member

Joined: Jan 2010

Posts: 696

Likes: 36

From: Laguna Hills, CA

What' I'm asking is what afr is the stock tune at during wot on the upper end. I know most of the factory tuned supercharged cars are super rich at wot as a safety measure. I'm installing alky injection so I'd be fine with 12.0-12.5 if I had it tuned. I've heard of factory tuned cars being in the high 10's at wot.