spiro27

im just about ready to tune my car. its a 01 trans am 6 spd. what i have done
eps 226 234 cam
tfs 215 heads
arh long tube headders 1/78
catted arh y pipe
have the 42lb injectors not on yet
ls2 t chain
hi vol oil pump
3 inch slp cat back
racetronix fuel pump and harness
i have 180 t stat not installed yet is it worth puttinh it in.
my questions are
1 can i put injectors on without tune will the car run to load on trailer to go tune it?
2 is my stock maf going to be an issue with tunning
3 i am running stock ls6 intake and stock tb is it worth upgrading tb.
4 is there any issues i can correct now so it make it easyer to tune or upgrade anything that need to be now to make shure there is no issue with tunning the car.

is there any recomendations you guy have to get it ready to be tunned.

BLK02WS6

iTrader: (2)

1 - no, don't put injectors in (at least don't start it with new ones) without a tune. Put it on the trailer first and install them there or do it at the tuner. Without the injector tables corrected, it will run very rich and you risk washing the rings (at the very least you will foul the plugs and kill them).
2 - the stock MAF is fine for your setup.
3 - I wouldn't bother myself unless you are looking for every last HP...
4 - If you have any known problems, make sure they are fixed... otherwise, just general things like fresh oil, fresh plugs and make sure you have plenty of gas in it (you wouldn't believe how many people take their car to get tuned with an 1/8 tank of gas)...

spiro27

cool thanks for help what do you think my car should make hp and tq.

redtan

iTrader: (5)

Issue...no. Will it hold you back on power...most likely.

The tb no, maybe a quick porting/polishing. Though the intake is very much worth upgrading, especially on a H/C car.

BLK02WS6

iTrader: (2)

A stock MAF will not hold back a stock cube heads and cam car...

You can't upgrade from an LS6 intake without replacing the TB as well... Question is, is it worth the expense of an intake/TB for the amount of power increase you will see - IMO, for a stock cube heads/cam street car, I would not spend that kind of money unless you have it to burn... but, that is just my 2 cents.

spiro27

my car has the ls6 intake already. i was thinking of doing a fast 92 intake and tb. zo6 maf and ftp lid. do you guys think this is woth it for my car. or should i just do a 80mm ported tb on the ls6 intake.

BLK02WS6

iTrader: (2)

You're really the only one that can answer that... depends on how much you can get the parts for... depends on what you use the car for...

The way I look at it is like this - if it is going to cost you an extra $1000 to pick up 20 rwhp more - for a street car, is it really worth it? Do you think you can really feel the difference between 420 rwhp and 440 rwhp on the street? I think not... But, only you know your wallet and your goals, so only you can decide if it is worth it...

thunderstruck507

iTrader: (18)

Maybe that depends on other factors such as intake? I had vacuum at WOT until I went to a bigger 85mm maf with a larger mesh screen than stock and a larger filter.

Those upgrades reduced WOT from 3-4+ kPa to 1 or less.

BLK02WS6

iTrader: (2)

I was talking about with an LS6 intake and TB... I tested it a couple of times on heads/cam stock cube cars - going from a stock MAF (with the tune optimized) to an 85mm MAF (with the tune optimized again) gained nothing...

Yes, when you upgrade the intake/TB, you will benifit from the 85mm MAF - but that goes back to my cost vs. gains opinion...

thunderstruck507

iTrader: (18)

Thanks, not trying to argue just posting my results, kinda thought the intake might have had something to do with it.

The MAF alone didn't show much in the way of gains. It was only after removing the GM screen for one with a larger mesh and replacing my filter with one double the size that I had good results.

BLK02WS6

iTrader: (2)

No problem I would bet money that the filter is where your gains came from.

spiro27

im getting a random missfire code and o2 sensor code. is this common before i get it tunned

BLK02WS6

iTrader: (2)

Random Misfire - yes, that is common. O2 - depends on which code.

spiro27

code p0300 random missfire
po135 02 heater i think.
do i need to take care of the p0135 code before getting car tunned.

spiro27

anyone have any ideas. i swapped the left side 02s yesterday cleared code ran it for 45 min okay no code. ran it today it came back is this gona effect the tune because of the po135 code.

BLK02WS6

iTrader: (2)

It should be tuned in open loop, so no, it won't effect it - if it comes back in after the car is tuned, you should replace that sensor...

spiro27

I swapped it for the rear on same side. Ran it for 1 hr dident come back but next day I ran it it came back dident set light but shows it on scan tool.

spiro27

Anyone ever had this problem with the 02 codes. What are the possible causes.

dodson55

iTrader: (18)

yes you can run the bigger injectors long enough to load a car on the trailer just do drive it long i would not change the mass air with a stock tb but if you every go to a fast set up then yes change it or go sd tune

BLK02WS6

iTrader: (2)

Bullshit!! With 42# injectors, it will be running 45% rich on top of that it will be commanding rich on an OL cold start... at the very least, you will foul the plugs - worst case you wash the rings and gas the oil (won't be too happy on the dyno if you gas the oil)! Bad advice...