jay00f4

Don't use a canned tune! Take it somewhere put it on the dyno and tune it. That is the best way to tune a car.

mikefan20

The problem is some people aren't close to a good tuner. You can't just bring it to any joe with a dyno....... If he doesn't know s197's then you will prob get a worst tune than if you got a canned tune from one of the guys mentioned on here. There are ALOT of people on here that are running just fine with tunes from bama, brenspeed, or evo. If you just call them (the tuner), they can make any necessary changesto your tune.

Stangie

The more you mess with it, the more problems you'll have. [sm=trust_me.gif]

jdback19

Trade it in for a GT 500!! Problem solved.

lukoi66

I'm getting a 91 octane tune and will be running 93 octane. That should help correct?

Also, after all is said and done, I'll be hitting a dyno for custom tuning not long down the road but in the interim, a canned tune from a reputable source (such as Bren, Evo, PH, Bama etc) and running a lower tune than the octane I'm using should be good most of the time, correct?

MusiccityGT

Absolutely. If you have a qualified tuner in your area that is familiar with the S197 and the handheld tuner you use, by all means, get a custom dyno tune. That gained me 23 more h/p and 15 more tq over the 93 Diablo "canned" tune way back before all the other stuff I have done.

lukoi66

like mike says tho, if he's not near a good tuner...what's the next best step? At least for an interim period?

cekim

I'd:
1. pop the hood and start checking things out -
MAF connector
pull a spark plug take a look
air leaks in the intake tube downstream from the MAF sensor
2. find another gas station!

MusiccityGT

Back out global timing an increment at a time till the ping goes away.

GTlust

I have the 91 and 93 tunes from Benspeed. I'm currently using the 91 tune with 93 octane gas. The 93 tune might pull a little harder at WOT, but the 91 tune seems to perform better all around. The idle speed was set to 850rmp's with the 91 tune, i changed it to 750 and I'm much happier.

I didn't experience any pinging with any of the tunes.