What Makes a "Good Tune"?

[e30Nick]

Not sure if this question has been answered before, but cant find a good answer by searching, so i thought i would make a thread. I Always hear the phrase(s) "you can do this with a good tune" or "yes it can be done with a good tune". My question is, what makes a so called "good tune", sorry if this seems like a noob question, i'm new to tuning. Just trying to get a feel for what is done.

[e30Nick]

anyone?

[varg]

There's more to a good tune than chucking it on a dyno and doing WOT pulls, tuning for power. Sure, getting the the timing right for best power without blowing it up is important, but what makes a tune truly good is making it feel like it was done by the manufacturer, the driveability stuff. This also is the stuff a lot of people have trouble with or neglect.

-Getting low/off load and transitional areas right to prevent bucking and hesitation.
-Setting up accel enrichment for best throttle response.
-Leaning out the cruise areas of the map(s) to reduce fuel consumption.
-Getting cold start and warmup enrichment squared away.
-Getting a good idle in varying situations.
-Getting MAT correction and MAT based timing retard right.
-Getting voltage compensation for dwell and injector performance right.
-Setting up closed loop AFR correction correctly.
-Setting up other systems such as boost and nitrous control, flex fuel.

It takes a lot of work to do those things, a lot more than it does to get the timing and fueling set to make as much power as possible.

[e30Nick]

There's more to a good tune than chucking it on a dyno and doing WOT pulls, tuning for power. Sure, getting the the timing right for best power without blowing it up is important, but what makes a tune truly good is making it feel like it was done by the manufacturer, the driveability stuff. This also is the stuff a lot of people have trouble with or neglect.

-Getting low/off load and transitional areas right to prevent bucking and hesitation.
-Setting up accel enrichment for best throttle response.
-Leaning out the cruise areas of the map(s) to reduce fuel consumption.
-Getting cold start and warmup enrichment squared away.
-Getting a good idle in varying situations.
-Getting MAT correction and MAT based timing retard right.
-Getting voltage compensation for dwell and injector performance right.
-Setting up closed loop AFR correction correctly.
-Setting up other systems such as boost and nitrous control, flex fuel.

It takes a lot of work to do those things, a lot more than it does to get the timing and fueling set to make as much power as possible.

thanks for the reply, helps to clear it up a bit

[LowR3V'in]

Can I make 400hp?

IDK man, maybe with a good tune?

NO SHIT. hey, with a bad tune bro, no problem.

Not sure if this question has been answered before, but cant find a good answer by searching, so i thought i would make a thread. I Always hear the phrase(s) "you can do this with a good tune" or "yes it can be done with a good tune". My question is, what makes a so called "good tune", sorry if this seems like a noob question, i'm new to tuning. Just trying to get a feel for what is done.

When somebody says in the forum, or even in real life

"if your tune is good"....."with a good tune"

I'm pretty sure they're thinking this,

"I have no idea and it might actually blow, I've never done that, again, I really don't know. I'm going to say, with a good tune it should ect ect"

HEY, can I use 2000cc injectors man and idle good?

Ya with a good tune!

ok. thanks. cool!

[berlow94]

It depends one what stage your at bro. Like stage 3.5 and up and you'll need a good cutom tune. If your stage 3.25 and under you can get away with a totally legit ebay tune.