stock 99 trans am dyno test

**socialdbob** · 01-29-2006, 07:35 AM

what is the rwhp for a stock 99 trans am?

**NeeD4SpeeD** · 01-29-2006, 08:02 AM

Somewhere between 275-285RWHP from what i've heard

**Mr. Luos** · 01-29-2006, 09:44 AM

My 1999 WS.6 dyno'd at 320/333 to the wheels with the loudmouth and SLP lid.

**Capster78** · 01-29-2006, 01:18 PM

you both are on crack. A 99 will usually dyno between 295-305 at the rear wheels with some factory freaks around 310.

**oneBADDz** · 01-29-2006, 03:16 PM

Originally Posted by Capster78

you both are on crack. A 99 will usually dyno between 295-305 at the rear wheels with some factory freaks around 310.

Actually that would put lous's numbers right on track. And 285 isn't a rediculous number either if it's an auto

**Mr. Luos** · 01-29-2006, 05:09 PM

Originally Posted by Capster78

you both are on crack. A 99 will usually dyno between 295-305 at the rear wheels with some factory freaks around 310.

Would you like the chart??
It wasn't 100% stock...but it only had a lid and catback.

**third_shift|studios** · 01-30-2006, 09:29 AM

mine's fairly stock cept air filter and borla, mustang dynoed at 315.

**Capster78** · 01-30-2006, 03:58 PM

Originally Posted by Mr. Luos

Would you like the chart??
It wasn't 100% stock...but it only had a lid and catback.

I was refering more to the guy saying 275-285hp.. Your numbers are a little more belivable even though they are kinda high for what you have. I have seen dynos that are +- 10-15hp difference from each other.

**mrr23** · 01-30-2006, 06:51 PM

well, here's my completely stock 99 trans am dyno. back when i had one. and i mean completely stock with 92k on the clock.

hood closed vs hood open

hood open vs new plugs, wires, fuel filter vs 150 motor rated n2o

**Capster78** · 01-31-2006, 03:58 PM

wow dude, you car must be fucked up to only have put down 268hp.. Either that or the dyno sucked. Or it was 100 degrees an you were 1,000 feet in the air.

I mean camon.. you opend the hood on your car and put DR's on and gained like 10hp and 30lbs of torque on the dyno.. If thats the case Im gana take my hood off and drive around.. its the new free mod.

**mrr23** · 01-31-2006, 04:03 PM

you can see all the temp and altitude on the graph. look closely at what i wrote. after changing the plugs, wires and fuel filter, i picked up 10 rwhp which brought it to 278 rwhp. i love the 18 rwhp i gained just by opening the hood. 250 to 268 rwhp.

btw, i only had that car for three weeks. car lot couldn't get any financial place to take the loan. so, they got it back after me installing the nitrous and running it down the track to a 12.09 @ 115 http://stealthram.com/99tatimeslip.htm