I see other people with about the same dyno numbers as me with alot less done. Should I be worried about this or just take it with a grain of salt as most people est. dyno numbers? I run 250 rwhp with cai, udp's, 75mm tb & plenum, msd blaster coils with saleen 8mm wires and ZEX racer plugs, sct tuner with dyno tunes, aluminum d/s, k/c clutch, f/l sub frames, prochamber with cat-back flows all on a brand new '99 4.6 Does that sound right to any one else??? The guy at my shop told me "I was doing good" since the motor is rated at 260 and I put out 250 to the wheel.

 

That doesn't sound too far off. I'd say those numbers are accurate.

 

You just said the same thing to the guy I am talking about! He has a 03 GT with cai, spacer, chip and h pipe running 250 to the wheel. How can he have the same rwhp as me if I have so many more mods on pretty much the same motor?!?!?

 

Different dyno, different conditions, it could have been alot of things.

 

+1..

Calibration may have been off on the Dyno... Maybe his car really is just a little bit more powerful..

Things happen, I wouldn't worry about it...



JT

 

You'll see small HP variations with cars that have equal mods.


But a 99+ GT with just a mid-pipe/catback & cai/chip shouldn't come near 250rwhp.

 

Well thats what I thought but the guy swears up and down it is and he took it to a dyno at a place that was in some mustang mag so they are pretty reputable. I just want to be sure I am not geting screwed on my end at my shop. They already are a little sketchy and I wouldnt be surprised if they just changed the timing so I could use my nos and called it a tune. But if people are agreeing with what my numbers are I guess they are ok then.

 

You are making the RWHP you should be for your mods.

The other guys stuff is inflated or he was on a different type of dyno.

 

Here's another one for you..


Are there any other places around that tune vehicles, that you could stop in and have them take a look??


If you really feel that something is up, and can spare the money, have them do a run or 2, just to confirm/deny... To me, the piece of mind I'd get from a second opinion, far outweighs dropping a load of cash on a new engine, or paying some scumbags to "tune," my car...



JT

 

I have a wideband a/f gauge and when I hit the nos its burried in the green (rich) I know that they are not as accurate as narrow but is that what it should be doing after a tune? I thought it was supposed to be in the stoich region of the gauge. Could this be a sign that they have slacked?