food nd cars

I've been trying to get a dyno tune for awhile but all the local tuners are busy or not answering.. My schedule is about to get really busy with another semester of college around the corner (next week) and i might just have to drive the car with the mail order tune from madtuner for awhile until my schedule clears up.. maybe a month or so.

anyways my WB is reading an AFR of 10.9 slowly dropping off to 10.7 at WOT.. Im not dissapointed in the power at all, but would like to get rid of some cam surge occurring below 2500 rpm. Also my cruising AFR is 17-15..

How much power do you guys think im holding back with this tune?
and cam surge isn't bad for the motor is it?

LSWHO

iTrader: (1)

I gained 3.5 corrected mph from fixing my very similar afr and pulling substantial timing from the madtune.

Cam surge shouldn't hurt anything but comfort.

You know, you could always ask one of us tuners to tweak your tune.

ZFreie

That afr seems really rich?

~Edit~ Still learning about tuning, so, forgive my seemingly stupid questions. I like to quadruple check my self.

nitrous2fast

iTrader: (2)

That is really rich.

food nd cars

Thanks for the offer lswho. My laptop is currently down so uploading a tune is out of the question for now. I'm not messing anything up being that rich I assume. Except maybe my mpg...

ZFreie

And a lot of power I'm willing to bet. I think I remember reading that around 12.5 afr is ideal for lt1s. Don't quote me on that tho, just some late night ramblings haha

~edit~ oh yea op, your car looks freaking awesome! No idea if I told you before.

SoxXpupPeT

iTrader: (34)

IDK an exact number but alot of people will pick up gains from proper AFR and timing.

LSWHO

iTrader: (1)

I haven't done any AFR corrections at the track to find my ideal, but I leaned mine out from 11.7 commanded up to 12.6-13.2 (depending on rpm) actual and that seemed to help out a LOT. But of course eliminating 10 degrees of knock was a HUGE part of my gains.

05HD

Back when I used to tune, it'd be 100+ hp from a safe guess mail order tune to a on car dyno tune. Those were turbo cars though so, Id guess less than 50 with an n/a V8 (double guess, lol. About as good as your question is going to get answered).

food nd cars

Thanks man!

food nd cars

jesus lol. Thats just wishful thinking, but if i did gain 50hp I wouldn't complain

trilkb

iTrader: (4)

can you describe the driveability of your car? Every time i drive mine now im not happy. The rpms never seem to level out at any point. I cant tell if its a bad tune or just cam surge, or hell maybe my valves arnt adjusted properly.

does your car have these issues? another part of the problem is the converter and going up hills for me. It wont upshift and it also wont hold a steady rpm.

are you experiencing similar issues? Obviously when my converter locks on the highway i get bad cam surge. I hope its just my tune being off or false knock.

food nd cars

Its very drivable. The cam surge just feels a little like a very small miss. Kinda hard to explain, instead of cruising and feeling a smooth steady rpm its not as smooth. However your cam is much larger than mine and your tune is probably to blame.

actually cam is not that much larger.. but still i think its your tune. Who did it for you?

RamAir95TA

iTrader: (2)

I gained 1whp and 30wtq from my mail-order tune to a dyno-tune running at 12.9:1 AFR.

food nd cars

what was your AFR before dynotune?

RamAir95TA

iTrader: (2)

11.9:1.

ZFreie

Interesting, almost no whp gain but a bunch of tq.

LSWHO

iTrader: (1)

1 whp gain in peak could also be a substantial gain in non peak numbers.

Know what I mean? Most people don't talk about non peak numbers, but that's where a lot of mods add the most power. The area under the curve.