ground_pounder

I had my 94 Z28 dynoed the other day after I added:
- magnaflow catback
- edelbrock shorty headers
- k&n cai
- tb bypass
- 52mm tb
- hypertech pp

It made 255 rwhp. It's an A4 so I know there's going to be more driveline loss but I expected more. What numbers are you guys with similar mods making?

96z28camaro

iTrader: (1)

So basically you got intake and exhaust. The hypertech and the throttle body bypass aren't really gonna effect your dyno that much the only mods that are gonna show a decent gain are gonna be your cai and exhaust. The numbers aren't too bad maybe slightly lower than what they should be. If you even consider 16% drive loss that puts you at 303 hp at the crank. That isnt too bad considering the 95 and lower were rated at 275 from the factory. When is the last time a good tune was performed? Maybe some new plugs, wires, oil, and etc. might give the z some good help.

ground_pounder

Forgot to mention a full tune up was also done. New plugs, wires, etc.
I estimate that stock it should make around 230, so +25? (exhaust) + 10? (intake) + 5? = ~ 270?

Oh yeah, the guys at the speed shop said the computer would retrain itself and power would go up a bit. Is this true?

the_merv

iTrader: (88)

He is an A4, so that is around 22.5% Drivetrain loss.
It seems low, I dynoed at SAE 262RWHP/300RWTQ, and that was a K&N Filter, Pacesetter Mids, Slowmaster Muffler, and a stock tune. I have an A4 also.

the_merv

iTrader: (88)

Computer only makes small adjustments, like air/fuel ratio, and timing.

blkchevyz

hows it running? transmission good?

97blkz

iTrader: (1)

My 97 a4 with a blow master and CAI put 264 to the wheels

the_merv

iTrader: (88)

Their dyno could of been off...

vtec

iTrader: (1)

spray it.

ground_pounder

The car runs great. Only 50K original miles. I guess the dyno could be off or I might just have a friday car

Honda Hunter

iTrader: (8)

If I was you I would find out if the Hypertech is causing you knock. Basiclly it's worthless from what Ive read. I wouldnt be surprise if it's the reason your numbers are low. Get a real tune from a vendor and start adding some serious mods. Youre really not that far off. We dont even know if theyre corrected or not.

Honda Hunter

iTrader: (8)

Doubt the dyno is off. Id blame the car first, dyno last.

blkchevyz

was it a dyno jet? or mustang dyno
did they use a wideband o2?

just hit the track and see what it does.

ground_pounder

it was a dyno jet? does that make a big difference?

StealthFormula

iTrader: (35)

Dyno Jets give you an accurate rating where as Mustang Dyno's generally dyno less.

TurboZ28

255 sounds about right. Maybe even a little high.

Intake and exhaust isn't going to add 35hp . Probably more like 10. If your lucky, 15.

slowmofo

iTrader: (6)

Are you still running the stock y pipe with your shorties? Your not gonna see much gain with shorties anyway, but the stock Y sucks also.

blkchevyz

the edlebrocks come with a y-pipe
had them, and loved them for the price

slowmofo

iTrader: (6)

ahh good too know....