Ok just got back from Dougs Dynopower here in henderson, nv . Very nice guy by the way. It is a mustang dynometer and i was running 91 oct at 21 lbs of boost.
Autometer boost guage was about 4 psi off , so defi guages are the next thing up.

Car made 269.5 whp / 282.7 torque

What you guys think these are decent numbers for my mods ?

 

Considering it was on a Mustang dyno, I'd say those numbers look fine. Now go get some cams to really wake up the car!

 

Thats what Doug recommend also , those are next , i will replace the timing belt and tensioner while im at in cause my 05 has 26,000 miles so its good insurance .

 

About what you would expect to see on Buschur's dyno.

 

Can i get too 350 whp on 91 oct with a custom tune ? What else do i need besides cams and meth?

 

350whp on what dyno? You can't just refer to WHP in a vaccuum - it depends on tons of factors. No, you will not reach 350whp on THAT type of dyno with the stock turbo without a built engine and tons of mods. Cams and meth are you only 2 remaining mods to maximize the stock turbo. You might get 320-330whp/340-350wtq with cams + meth + custom flash.

 

 

Was the boost gauge 4 psi or 4 psi low?

 

It was reading 25 psi so it was reading 4 psi too high . Autometer mechanical guages SUCK <<.. I will buy some Defi's when i get some extra cash

 

Just because DEFI is expensive doesn't mean it's accurate. Autometer mechanical doesn't automatically suck just as the DEFI won't automatically be accurate. The only truly accurate boost gauge is when using a MAP sensor.

What scares me is that you were driving around thinking you were running 25psi on 91oct and didn't turn the boost down. It also doesn't make sense to have much higher torque than HP unless your boost is fairly high. We only see discrepancies like that with boost levels above 22psi on the stock turbo...especially with 91oct, since you can't give a lot of timing at peak boost.

 

Well all the guys i know that run Defi seem to be right on. Dont be worried i wasnt driving it around thinking i was boosting 25 psi. When i was on the dyno i was told that my car was only hitting 18 psi boost guage was reading 21psi and 19 or so by redline. I am aware that running more boost requires higher octane , but on 91 octane 21 psi should be fine . Car only made like 235 hp then after turning my boost up it made the 269

 

Yes, 21 is fine, but you made it sound like you were running 25psi on your boost gauge only to find out it was really 21psi. What really happened is you were driving around at 18psi all this time thinking it was 21psi, which makes more sense.

I've seen Autometer's be "right on" and DEFI's be "way off." Don't get fooled by a few local examples. Try to read all the examples here on EvoM, then consider the extreme cost of the DEFIs...kinda like how you bought that Tial BOV for no apparent reason.

 

Thanks Warrtalon . And take it easy on the TiAL BOV Its really not that bad