Its not just a claim, I was next to one, well not next to, about 5 car lengths behind at the drag strip......131 mph if I remember corectly.

 

no stock C6 Z06 traps in the 130s

 

Then it wasn't stock. Sorry dude I am not gonna argue with you about the Z06 being a great car, it is an awesome car, but they do not, I repeat do not trap 130-133mph stock. Why don't you just research the car, go to the Z06 forums, they post their times all the time.

 

Look I'll even give you the benefit of the doubt, and say you perhaps saw a factory freak. But how in the world can you claim stock Z06 running 130-133mph when 99% of them trap between 120-127mph, and most are in the 120-124mph range, a few have trap higher than 124mph and as far as I know the stock record is 129mph.

 

I like to get my info in real life, We are lucky enough around here to have a fast track, cool nights and sea level altitude. Just like comparing dyno's, comparing tracks is kind of hard. Back in my DSM days I couldnt break into the 11's to save my life, went to the DSM shootout and ran 11.9's at Norwalk which was always prepped very well. I know what I saw, and dont blame you one bit for not believing it. I dont believe anything either unless I see it happen right in front of me. One of the main reasons I cant buy anything on ebay LOL.

 

Can we start talking about evos and pump gas again?

How many people out there running GT35R on pump and boosting less than 24 PSI? If so... why exactly did you choose to stop tuning at this boost level?

 

Waiting on E85 in my area.

 

Seems to me, any competent mapper, will take responsibilty in a mapping session of finding the point where more boost does not yield more power. I want to believe there is a lot of bad mappers out there, as alluded to by Mr Buschur earlier.

Yes a standard turbo will start making a lot of hot air past 1.5 bar. Not the case with a 35R and I don't see this magic number of 22 psi on pump having any bearing on a larger turbo car.

If your tuner simply stops at a certain psi without trying more, I think your tuner has some explaining to do.

 

I guarantee for the tuners that have tuned hundreds of similar cars they know exactly where that threshold lies, and then tweak individual cars accordingly.

Mr Buschur is one of the very few that will push that much boost on 93 octane, most other tuners feel comfortable with 22-23 psi max on 8's on pump and 24 or so on IX's.

You could run a much lower compression ratio and run much more boost if your only goal was running as much boost as possible.

Scorke

 

Scorke, what tuner has tuned 100's of 35R's? Let's not exaggerate! Second of all, what tuner has ever posted a dyno graph of a 35r Evo running 28 psi w/less timing versus 22 psi w/more timing and proved it made more power at 22 psi? Even then I'd have to be sure the mapper was listening for det properly and knew what he was doing.

And correction... Mr. Buschur is one of the very few IN THE USA that tunes that much boost on pump. Check out the top 5 tuners in the UK and see what boost they'd setup a 35r for on pump.

 

As far as 100's of 35R's I am not sure, maybe some have maybe some havent but after tuning lots of similar cars I am sure they notice what does and what doesnt work.

In regards to boost run on pump, depending on the turbo, cam, head, piston, and engine dimensions different cars will work better with different settings.

My car will be getting tuned on monday, I will ask to see if it can/will be tuned for higher boost and less timing on pump if it makes considerably more power that way.

Scorke

 

Agree with above... plus dozens of other variables like intake temps, component materials, etc.

That is why it is distinctly curious that we see so many 35R cars running similar boost (~23 psi).

 

^I bet all of them have pretty aggressive cams, with similar CR's(8-10), with similar octane fuel (93).....

Scorke

 

And I bet you the ones that listened to det properly and know how to map a car found that 28 psi made more power then 22 psi.

I say that because of evidence from David Buschur and many top UK tuners. They are running 2+ bar of boost on pump on standard'ish spec engines ~8.5:1.

 

Links to the UK tuners that run 2+ bars of boost on pump fuel please?