American Racing Headers GT 350

[AZBOSS]

woooooooooooooooo

What did the AFRs look like at WOT with the headers and no tune?
Also: Is the 508 figure with the stock intake?

 

[DSG2003SVT]

I'm betting 60whp+ gain over stock with the tune adjusted for the headers. Thanks for all the information! I can't wait to see what E85 does after all this.

 

[tt335ci03cobra]

You mean 22whp..

I did. Good catch

 

[Elnrownr]

Car started at 467 hp ended at 518 hp on 93 oct. It's 88 degrees and humid here in Tx.

Will do E85 next week and ill post dyno sheet shortly

 

[DSG2003SVT]

Woot for 51whp! I over estimated some, but that's still a massive gain. I can't wait to see the before and after dyno sheets.

 

[myshelby3425]

Car started at 467 hp ended at 518 hp on 93 oct. It's 88 degrees and humid here in Tx.

Will do E85 next week and ill post dyno sheet shortly

Nice, so a solid 32hp over the intake tune. Yea those temps are pretty warm and humidity doesn't help.

 

[Elnrownr]

 

[DSG2003SVT]

Did the torque jump to 3500RPM go away? Headers seem to eliminate that, which is a pretty important improvement over stock since you'll feel it in daily driving.

 

[PACETTR]

SAE numbers from all runs would be ideal for comparison.

 

[myshelby3425]

View attachment 62822

What is the 479 baseline?

 

[Elnrownr]

I have sae numbers they will be in a different write up posted by admin.

But with E85 i bet we can break the 525 market

 

['14 Shelby]

Dem gainz is awesome! Still waiting to hear the before & after

 

[Elnrownr]

It sounds like an angry viper

 

[THE_EVIL_TW1N]

SAE corrected will probably make a good 15-20rwhp less. I wonder if it would crack 500rwhp SAE.

 

[cluscher]

What is the verdict on needing a tune revision for just the headers? It sounds like your intake tune did not require further revision for the headers? So I would guess one could also do just a header swap and stick with the stock calibration? What were the AFRs before and after the headers?

 

[Elnrownr]

Sae was 506

 

[Elnrownr]

I'd definitely advise on getting proper tuning when changing the headers.

 

[DSG2003SVT]

From the two or three ARH installs posted on GT350s so far, AFR definitely needs to be dialed in after the headers.

 

[DSG2003SVT]

Sae was 506

What was SAE on the stock baseline?

 

[Elnrownr]

It will be released in an official write up on here by the admin