DjBootleg813

So I have the handheld 'SCT' tuner and to be honest idk wtf half of the settings mean..... I listed all of the setting options below in hopes of maybe you guys could tell me what I should set them to for best performance? All my mods are listed in my signature.. Even if you can tell me one I would appreciate it. Thanks guys =)

Fuel octane
Fuel economy
Fuel injector
Maf
Rear 02s
Egr
Spark 0-2000
Spark 2-4000
Spark 4-8000
Wot air/fuel
Rev limit drv
Rev limit neu
Idle speed drv
Idle speed neu
Low speed fan
High speed fan
Wot shift 1-2
Wot shift 2-3
Wot shift 3-4
Shift press 1-2
Shift press 2-3
Shift press 3-4

cliffyk

from SCT's website:



For more information about tuning in general I recommend Greg Banish's book Engine Management: Advanced Tuning.

uberstang1

Id say, take care to a reputable dyno tuner.

cliffyk

There is no reason why anyone cannot learn to tune their own engine, it isn't even remotely difficult once you have acquired the knowledge and ability, and necessary tools--not one bit of rocket science involved, and even the best tuner out there started out not knowing squat...

uberstang1

I just wouldnt trust tunning a car without the ability to monitor air/fuel and engine conditions like you can on a dyno, if the car is na with a few bolt ons id feel alright but if the OP has any form of power adder i wouldnt try it.

cliffyk

Dynamometers don's do either of those things, wideband O² systems and data loggers do. While dyno systems almost always incorporate WB and data-logging systems, all the dyno itself does is provide a convenient way of determining if changes to the tune have made the engine's output better or worse.

Beyond that, a given dyno tune is only valid for the ambient conditions at the time the tune was created. That is why pro racers re-tune between runs, as track conditions change, and even dynamically "on-the-fly" during roundy-round racing. I have three base tunes, one for each of the 2-1/2 seasons we have here in NE Florida--all of which were optimised using a nearby straight and middle-of-nowhere road and my trusty 18-year old G-Tech Pro:



I put the car up on the rollers now and then to get baselines, but that's it.

WannaBeGearHead

That's what people say when they haven't tried learning about tuning a car. Everyone makes it seem like it's impossible to do.

uberstang1

I can understand what cliffy is getting at, but wannabe what are u trying to say, without any kind of equipment u think u can slap a blower on a car change some settings in a tuner and go spank it around? I have yet to see a supercharger mustang that hasnt been tuned with either a can or box tune that came with the blower or tuned by a dyno tuner.

uberstang1

cliffyk

"A man's GOT to know his limitations."

Harry Callahan, Magnum Force 1973