dreamer

iTrader: (1)

so like the title suggests, I dyno'd my car this morning and was very diasappointed. pulled 290whp 311tq. its hot and humid out, but still should be higher IMO.

anyone else pull crappy #s like this? I just put in new TR6 plugs gapped to ~.038 because I have a nitrous system. What might cause this? maybe wires? clogged cats? any suggestions?

car only has 38K miles on it and feels like it running fine.

streetwarrior96

Man I'd expect those numbers from an LT1

msgZ28

iTrader: (1)

Was it on a mustang dyno or a dynojet? I always read on this site that mustang dynos read lower than dynojets.

98camaroLS1M6

iTrader: (35)

Put a new fuel filter, get plug wires (MSD), change all fluids, and get it tuned, could have had bad factory tune.

dreamer

iTrader: (1)

dynojet...

OUTLAWZ RACING

iTrader: (9)

I would do a full inspection and tune up to include a top end cleaner and then try a differnt dyno

TXZ28LS1

iTrader: (5)

that is pretty weird. i had a 2000 z28 auto. with only mti lid, and loudmouth catback i put down 304/310. i was told i could have made more power or so but the 2.73 were killing me.

gillbot

iTrader: (27)

My wife's did 307 rwhp stock on a dynojet with an auto, seems close to me if the weather was bad.

2001 White Ws6

iTrader: (1)

Just goes to show you not every m6 ls1 dyno's 320+.

bene

iTrader: (16)

Off topic: How's 2.73 has anything to do w/ robbing horsepower?

dreamer

iTrader: (1)

apparently I was running lean.

A/F was ~13:1 at 3K rpm and as I revved it up it steadily decreased to ~12.6:1 at 6K rpm

I'm replacing the fuel filter tomorrow and probably gonna seafoam it too.

verbs

almost none....

98camaroLS1M6

iTrader: (35)

A friend's 2004 GTO 6speed went only 298SAE not too far off from you.

dreamer

iTrader: (1)

his was probably stock though, right?

Hennytime

iTrader: (33)

i did 320 with a lid/cutout on a 02 z28

Black02SS

iTrader: (36)

Thats not lean. What was the actual temp and humidity outside? Were those SAE or STD numbers?

98camaroLS1M6

iTrader: (35)

Yes, as far as I know, might have had a pp tb but that was it.

92SilverSHO

iTrader: (3)

probably the dyno. my car with just a lid, dynoed 296/306rwtq, but everyone that day was down about 15 or so. I added a cutout and the dyno numbers are in the sig and i know its fairly accurate because of my trap.

bmfcamaro

iTrader: (1)

none commented on the plugs. tr6's. those are for nitrous. tr55 are what you should be running n/a.

Black02SS

iTrader: (36)

I'll disagree. I had my 02 dyno'd with Lid and SLP DD, she did 319/336. This was with TR6s.