mrounds06

I have a 2000 GT with the following mods: K&n intake, mac prochamber w/flowmaster 40's, 4.10 gears, diablochip, 75mm bbk tb and plenum and VT stage 1 cams. The car was at MV performance and i had a terrible time with them. The car put down 265.2 whp @5500 and 290.2 rwtq @ 4250. Does this seem low to anyone? Ive seen other cars with same mods pushing ~280-290. All input appreciated.

StriderTacticaL

So basically intake, exhaust, tune, and VT1's...

Seems kinda low to me. So the car was dyno tuned? what kinda fuel?

EDIT: Is this an auto?

mrounds06

It was 93 octane, and they said it was dyno tuned but with these numbers i dont feel it really was. Does 280-290 sound reasonable?

MU71L4710N

maybe a little low but you dont have headers.

also you never mentioned your tranny. auto or 5sp?

StriderTacticaL

Well he just added "short shifter" to his list of mods in his sig so yeah I think 265 is definitely kinda low...I woulda expected at least 275

Maybe it's the mufflers on the stock catback?

MU71L4710N

didnt see that lol. and doubtful, catback isnt going to make a 15rwhp difference.

did your tuner talk to you at all? whats your AFR look like? were your injectors maxing?

StriderTacticaL

He added it after you posted so your all good lol

I actually have plans to get these cams...and I'm hoping for at least 285

mrounds06

my dyno sheet doesnt show afr.My tuner didnt have anything to say to me, thats why i felt it didnt get tuned. They just told me numbers gave me the sheet and said pay this lol. ive seen some bolt-on cars tuned right that make close if not these numbers. Just irritates me cause i spent money on getting it tuned. My car also runs rich. Mufflers are flowmasters not stock. As far as injectors i have no clue.

mrtstang

Those numbers look a tad low, but dynos vary, so i wouldn't get too wrapped up in that. If the tune is off that's another story. I have cams almost identical to these, with full bolt ons, custom dyno tune, 5-speed, and made the numbers in my sig. The only difference between me and the op's setup is long tubes and udp's from what i can see.

StriderTacticaL

Your dyno sheet should really have shown your AFR on it...do you remember if they even went under your car and plugged in a wideband AFR sensor?

And I meant mufflers and catback as in chambered flowmasters and the stock catback piping....even though I don't think I full catback is whats keeping you from much higher numbers