Thread: dyno performance, sheets and videos

I havent seen a thread dedicated to posting dyno results and mods and since I just went to the Dyno over the weekend I thought I'd start one.

Setup while on the dyno, 3rd gear runs:
2005 Pontiac Grand Prix GTP Competition Group
(Stock 3.29 gear ratio)
ZZP front Powerlog
ZZP rear Powerlog
ZZP 3" Downpipe with highflow cat
ZZP 3" Catback exhaust
open cone air intake
180* thermostat
W-body store 10mm plug wires
AutoLite 104s
ZZP Ported and polished lower intake manifold

Overkill (revised stock tune) for 180* thermostat and open intake:
220whp 232wtq

Vids
Dash view 3rd gear run
https://drive.google.com/open?id=0B1...FBMR0lfOGhxVUE

Outside view another 3rd gear run
https://drive.google.com/open?id=0B1...mRwY056WUlFMnc

Dyno slip
https://drive.google.com/open?id=0B1...ZGR3ZQV3FBMGJv



I'll be dropping to a 3.6 pulley, #60 dekka injectors and an LQ4 MAF very soon and afterwards I will return to the Dyno again to see the changes.

I got this car 6 years ago, loved it and have daily driven it since then. The majority of my mods were installed in the last 2-3 years. The tune was put in not too long after I got the car. It currently has 165k miles on it.


Post your dyno sheets and setups, I want to see what you're making.

sorry, yes stock 3.8 pulley on it.

Theres a shop in my area, actually half a block from the junk yard that does dyno days where its $60 for 3 pulls.

The last one i went to made me sad; i only put down 199whp and 211wtq but I found that was likely because i had a 195* t stat in and my plugs were pretty ****ty, i was also running 8mm wires vs the 10s now) so i fixed all that mess and saw a +20whp and +21wtq improvement.

So now im hoping to crank it up with a tune for all the work thats been done since the stock revision and see what i can get at the wheels.

Ricer math tells me I can hope to see 260 to 275 at the wheels with a tune and dropping to the 3.6. What would you guess? Ill post the results but itll be probably a month before i get it back on the dyno.

post your results when you get the sheet!

Where is that thread were people were arguing that plogs/headers will not increase hp? This thread proves it.

You're not gaining 30-50~ WHP dropping .2" of a pulley size, even if the tuner makes the car run to the ragged edge.

Re-tuning the car...with headers...and a 3.4" might net you 250~ to the tire.

These aren't HP cars. They're torque based. You'll be disappointed each time wanting solid numbers.

Originally Posted by Grimsin

Where is that thread were people were arguing that plogs/headers will not increase hp? This thread proves it.

You know how easily dyno numbers can be skewed, right?

The gain he is seeing is likely from the intake, downpipe, and mufflers.

Mostly the downpipe.

Mostly.

Because the intake makes more noise along with the mufflers.

I gained about 8whp going from a stock intake to a hai.

Don't you feed me your corn field lies

Ha. I got video to prove it!

But you like you said, the dyno was probably skewed lol

It was literally within ten minutes of eachother on a dynojet.

So only your dyno's are legit, I see lol.
I'm just poking at ya just to let ya know. No harm intended

So only your dyno's are legit, I see lol.
I'm just poking at ya just to let ya know. No harm intended

I previously had a 3.5, stock Gen 5, top swap, E85, 60 injectors, 195 stat, Speed Daddy headers, stock heads, VS cam, stock rockers, stock catback, stock intake with K&N drop in filter, 8 lbs boost, and did 280 hp to the wheels at ZZP. I am down to 3.0 pulley, more timing, still no KR currently. I am guessing probably at 300 hp now. Maybe more. Who knows.

Sorry no vid but here is a pic of it.