camarostripes96

i got a 96 trans am lt1, with longtubes, ory pipe and deleted the air/egr, i know i am going to need a tune but whenever i get it all on it may be a couple of weekd before i can afford a tune, would it hurt to drive it without a tune or will it mess anything up?

Pro_built7

iTrader: (9)

no you can still drive it like that it will just be a little down on power and your "service engine soon" light will be on, I'm driving my car (all mods in sig) untuned for about a month before i get a madz28 tune

Pro_built7

iTrader: (9)

glad to hear you went race style man!!!

camarostripes96

down on power huh? as in what ?

moserman

iTrader: (7)

down on power because the mods are too extensive to have the pcm self correct itself for proper fuel trim, etc.

Pro_built7

iTrader: (9)

your air/fuel table will be off and the pcm won't be able to fix itself (as moserman said), this isn't bad, it just means you won't make the most horsepower possible until you get it tuned. you CAN still drive it tho, and it will still be a very noticeable difference from stock, just not spot on..

camarostripes96

so would mine be down on power, i have a 96 trans am lt1, with longtube headers, egr/air delete/ and ory pipe, k&n cai and borla catback? would mine run like crap?

integraxtc

iTrader: (11)

no man. You'll see power, just not max/peak power.

Just mod it and tune it when you can.

/thread

camarostripes96

so with the mods i have now , i will see some power and if i get a tune i will see more power ?

Formula350

iTrader: (3)

That about sums it up

Pro_built7

iTrader: (9)

ya... you said that in your original post. isn't this the same question.?

reread my last posts.......

infinitebird

iTrader: (11)

Fuel trims are not tunable, except via global mods like the injector constant, which do not apply here. This is a common misconception.

Your wot a/f table will be off yes, but if your fuel trims (part throttle) are off it is because your o2 sensors are bad, not because you lack tuning.

Pro_built7

iTrader: (9)

so you're saying when you mod only your wot table will be off, and your part throttle will still be correct, assume good o2's ?

camarostripes96

???? um ok dont understand but i guess lol

Ironxcross

iTrader: (8)

the fuel table is basically how much fuel is being injected. since the car is confused basically, it defaults to being rich (using more fuel) this isnt the best for power. so having a tune lets the computer know that you have these mods and what fuel table (how rich or lean) to make the car run at a certain rpm.

infinitebird

iTrader: (11)

yes that is correct.

unless you do mods like injectors that require tuning of the global fuel parameters.

imnotplutonium

iTrader: (4)

its going to run fat but when you tune it and lean it out you will net some more ponies. no danger but yea your ses light will probably be on from the egr being gone

camarostripes96

sweet....so who all in here has emission headers or race style headers?