95 Dyno

[SR-71]

So I dyno my 95 which I picked up on Thursday and it dyno'd 270.9rwhp & 205.07tq. It has Comptech headers, factory cats, custom Magnaflow cat-back and some random intake. It had a little misfire below 4k rpm and smoothed out above, changed them when I got home and now runs smooth. I was expecting around 240-250rwhp this was just a bonus. I have a video but cant figure out how to upload a clip.

Can someone tell me what a bone stock 95 makes?

 

[MaxGeek]

It depends on the dyno since they are all different. I think in general a 3.0L should put down 235hp and a 3.2L should put down 250hp. I also recently dyno'd my car and the operator said his stock NA1 put down 250ish. My stock NA2 made 268hp on that dyno. So yeah it probably reads on the high side.

 

[Old Guy]

What correction factors were applied to the test? I am not really up on what STD Smoothing :5 means. There is a legitimate standardized SAE correction that attempt to correct for variations in atmospheric pressure, air temperature and humidity at the time of the test. Even this legitimate correction has a tiny 'flakey' factor because there is a component in the correction based on assumed engine friction losses. The dyno operator should be able to give you the actual magnitude of the correction factor that was applied to the test results.

I have heard of chassis dyno operators applying non standardized correction factors to deal with losses at the roller - tire interface and then the super flakey adjustment factors which attempt to estimate crankshaft horsepower from rear wheel horsepower.

The other factor which MaxGeek was perhaps alluding to was when was the dyno last calibrated (if ever?). Aside from load torque calibration / zeroing which is moderately easy (if somewhat time consuming depending on the dyno) there is also measurement of the friction losses in the roller mechanism which may be more of a challenge. Lots of opportunity for horsepower inflation in the calibration process if the operator wants to provide the customer with nice numbers.

 

[bullithollywood]

FWIW for comparison my 95 is bone stock but for 97 OEM headers and Hiflow cats. With 48Kmi on the ticker it dyno'd 249 RWHP and 203ftlb. You're torque is about the same as mine but your HP is way higher.

 

[SR-71]

I'm saying the dyno is 100% correct but all the cars dyno a 01 M5 with exhaust dyno'd 325rwhp gus with the same mods make slightly more power a new Z06 put down 450ish rwhp the torque was like 550. From my understanding dyno jets tend to read low. If you wanna just be a dick that's cool but please do it somewhere else

 

[docjohn]

I'm saying the dyno is 100% correct but all the cars dyno a 01 M5 with exhaust dyno'd 325rwhp gus with the same mods make slightly more power a new Z06 put down 450ish rwhp the torque was like 550. From my understanding dyno jets tend to read low. If you wanna just be a dick that's cool but please do it somewhere else

who is being a phallus?....and dynojets are usually optimistic....mustangs are are more pessimistic if that helps...most stock NA1 motors are anywhere from 235-265 rwhp.

 

[SR-71]

who is being a phallus?....and dynojets are usually optimistic....mustangs are are more pessimistic if that helps...most stock NA1 motors are anywhere from 235-265 rwhp.

Ok so stock motors are "235-265 rwhp" and I have a couple bolt on putting down 270rwhp, perfect thanks for proving the dyno number are correct. Take care.