They are SAE corrected.

 

AND I have a moser 9 inch with 31 spline axles..

 

Doesnt matter. His dyno numbers are corrected. His actual numbers are likely 17-22% lower than that given the average correction factor we see up here. One thing to keep in mind though, is that him running 14psi boost is like anyone else at sea level running about 11-11.5psi boost. His absolute manifold pressure is around 26psi.


Nonetheless, if you had a 1.2ish correction factor your actual numbers are around 460-470rwhp. For that absolute manifold pressure being seen (even with a 9 inch rear axle), the power numbers do seem low. Was it a mustang dyno?

 

Boulder huh? You should come up to Ft Collins some time, and nice numbers btw.

 

what is it tuned with, and who tuned it

 

wow... ya'll aren't too far from me. I was in fort collins a couple weeks ago.. wish i knew all your peoples numbers!

but you bring that car down to sea level and tune it... run 2#'s less boost and i bet it is faster than it is up here in the nose bleeds

 

if you could post the graph (preferably the run file) then it would help alot.

i can tell you that up here (colorado) the atmospheric pressure is ~11.8 (instead of 14.7 at sea level)
when i was running 24 psi guage, my ecu was only seeing ~18 psi.

and the way most dyno calculate correction factors are way off for boosted vehicles.
get the car to a track and the trap speed and weight will tell you the power your making

good luck, hope to meet some of you colorado people some day

 

The car is getting dynoed again here in the next hour or so. I sent the PCM off for tuning, and saw 566 rwhp on the first re-tune. They sent the chip out again wednesday for some fine adjustments, and the chip got back today. They raised the rev-limiter from 6,000 to 6,500, leaned the a/f ratio at the low end, and added more fuel from 4,000 - 5,000 rpm. Hopefully this tune is spot-on this time and we should see some better #'s.

I too live in Colorado Springs. I was in Boulder when I went to Colorado University, but I am done now. The engine was built by RMCR here in the Springs. Ill post the updated dyno graph later tonight.

 

So your sending you chip out to get tuned??? Im not using the stock ECU anymore and i have a chip burner for the 93 chip. Pm me if you want to know more.

 

Those number are way better than what I had, but I was on a mustang dyno! Who and where did you dyno at? Race gas?

 

his torque numbers closely match my 14psi with ATI twin high flows tq number... But I only turned it 4800 rpm due to some ignition issue I can't figure out. I was super-conservative on timing while trying to figure out the ignition issue or probably would have made quite a bit more... (i really only have 600rpm of usable numbers at 14 psi)

What's your timing table look like? post the graph

 

Just got the tune back and we got the car on the dyno again and it put down 596 rwhp on only 12 psi...I thought I would see more boost with the 3.4 inch pulley, but figure in alltitude and all and i get 12 psi and the blower is pretty much maxed...i will receive a copy of the dyno graph tommorrow when i go to pick it up from the shop

 

nice!

 

wow nice new numbers kredz28
at the beginning of this post i thought your numbers were looking good. we have a similar combo and i made 567. after reading a little more i guess my numbers are low. im running a 3.85 pulley and seeing 13#'s still the same set up in my sig. mine was tuned pretty conservatively by carolina auto masters. what do you guys think, i dont have timing specs, 6500rpm??

 

Its probably your camshaft...the 224/236 is a smallish cam for a 383...i would get a higher duration cam, with well over .600 lift..also getting a more aggresive tune will obviously gain you more power