So i finally got the ZZP S3 H/E, 60's, 2.8 pulley and my fronts trans mount installed on the car. Still got the rear trans mount to go.

With the 2.9 pulley i would see a max of around 16.5psi. Just got the 2.8 put on and i am seeing almost 20psi at around 7k. Is this not a little high? I would have guessed 18.
Car is on a stock exhaust with a ZZP 3' Catless DP.

Other than that the S3 H/E from zzp definately helps the car recover faster. Props to them.

 

Well actually. It seems fine becuz of the cold. If u had a catback I could say,different. And ure altitude has a lot to do with this as well I mean id say most would be 18. Ut if u r using the stock gauge its usually off by lbs. Have ure tuner look into it.

 

I run about 16psi on my 2.8. Once in awhile i hit 17.5.

 

Are u meaning 2.6 because u r fine. .

 

Slight typo. Was on a 2.9 and just went to a 2.8. Seeing 20psi with the 2.8.

 

On stock header and catback on a cold day I could see it being normal

 

That is a little higher than normal, but like previously stated, cold air and stock cat-back could be the culprit. Its been dipping into the low 20s here at night, and my boost is staying consistent, around 17-18, same boost as earlier this year when it was 90 degrees. Hard to say for sure what's causing it.

 

U are fine as long as ure not catted

 

18 max on my 2.7 vibrant header, catless n dynomax turbo muffler. rev limit will skew it some if you push it, it will always make more.

 

On my old ss I made 18 on cold days. I had 2.6 60s and everything else but I had a lot of timing 22 no meth. that'll make a lil difference.

 

this.