How do bolt-ons effect a/f?
How do bolt-ons affect a/f? I am trying to decide if I need a tune/tuner at this point. Mods are in sig.
Has anybody dynoed with similar mods and no tune? If so, what was the air/fuel like? Also, if/when you did get your tune, how much power did you pick up?
Thanks,
Kris
Has anybody dynoed with similar mods and no tune? If so, what was the air/fuel like? Also, if/when you did get your tune, how much power did you pick up?
Thanks,
Kris
Last edited by KrisR; Jul 18, 2005 at 03:35 PM.
Originally Posted by unit213
I find it amazing that people actually mod cars and leave them untuned.
what's an even better amazement is thinking just because someone puts a part on, it has to have a tune. case in point. the wife's car has all the bolt-ons and vinci ported heads. tuned it when i had the borla catback on. gained 17 rwhp. turned around and put the bassani tru-duals on. it made 1 less hp than the tuned w/borla. tried tuning it, kept losing 3 rwhp with lots of tuning tried. best power made was with stock tune. so, it runs with stock tune.
you just don't know if it needs a tune until you get it on a dyno and try it out and see what's going on.
you just don't know if it needs a tune until you get it on a dyno and try it out and see what's going on.
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From: Earth
Originally Posted by mrr23
what's an even better amazement is thinking just because someone puts a part on, it has to have a tune. case in point. the wife's car has all the bolt-ons and vinci ported heads. tuned it when i had the borla catback on. gained 17 rwhp. turned around and put the bassani tru-duals on. it made 1 less hp than the tuned w/borla. tried tuning it, kept losing 3 rwhp with lots of tuning tried. best power made was with stock tune. so, it runs with stock tune.
you just don't know if it needs a tune until you get it on a dyno and try it out and see what's going on.
you just don't know if it needs a tune until you get it on a dyno and try it out and see what's going on.
You at least have to make a pull to see where you're at unless you have a wideband.
