MODERATOR:Im posting this here because im searching for a good LT1/LT4 shop not a LS1 specialist that do LTX base car once every year But if you think its the wrong forum just move it.Thank you.

I need a good shop for my LT4 firebird near Champlain NY 12919 or Montreal(im at 30mins from Champlain).I need a serious shop that can do some troubleshooting for my problem, fix them and probably do some tuning.

I dont wanna shop that does ltx base f-car only once in a while because i dont wanna hear something like:"i think this is your problem but im not sure"

So what are my option.I spent more than 15k in that car in the last 2 years and it still doenst run good so its time to bring it to some pro

Thank you

 

hmmm. whats the problem? I read your post about hesitation problems. Is that it?

 

Well yeah the car hesitate,from the datamaster files it run lean and the pcm try to compensate but it make it run to rich.

Also i got knock all over the rpm band.

And im tired now

 

What mods is it you have though.

 

Nothing crazy just a fun and reliable setup:


CAR:
1995 Firebird formual silver/black top,6 speed,t-top,leather

MOTOR/IGNITION:
-Brand new 96 LT4 GM crate motor with plastic valve cover
-New GM lt1 oil pan
-96 LT4 GM intake
-New Delphi 32lbs injectors
-New Delco optispark distributor
-New msd blaster coil
-New taylor spiro wire otvc side mount
-New tr55 ngk plug
-Moroso CAI
-Brand new crank hub
-Brand new ASP crank pulley
-New rebuilt and ported(52mm) stock throttle body to avoid sticking blade with ported air foil
-New knock sensor
-New oxygen sensor(on both side with new pass side O2 extension)
-New coolant sensor(both: on head to gauge and on water pump to ecm)
-New oil pressure sensor with new angle fitting
-New throttle cable(no traction control)
-New rebuilt stock water pump
-New power steering pump
-New poly motor mount(2)
-New A/C delete pulley
-New dipstick tube and dipstick
-New pcv
-New IAC
-ALL NEW gasket for everything(water pump,intake,steam pipe,TB,etc...)


EXAUST:
-New Kooks custom stainlees steel headers(1 3/4" primary to 3" collector)
-New Kooks custom stainless "y" pipe no cats(3")
-Magnaflow stainless steel cat back
-Accessories:stainless band clamp,1406 headers gasket,1" 12pt stainless steel headers bolts

CLUTCH/DRIVELINE:
-New RAM HDX clutch kit ,with new master cylindre and new oem pressure plate bolts
-Stock resurfaced flywheel(oem first time) with new oem flywheel bolts
-New pilot bushing
-Spohn chromoly HD driveshaft with spicer yoke and 1350 u-joint
-Strange 12 bolts,hd posi,33splines,3.73 gear with LPW cover with preloads caps

SUSPENSION/CHASSIS:
-Koni SA adjustable shock on stock spring
-Stranos 35mm front Hollow sway bar with poly bushing and end link
-Stranos 22mm rear hollow sway bar with poly bushing and end link
-Strut brace
-Welded subframe connector
-UMI tubular adjustable rear control arm(poly/rod end)
-UMI tubular adjustable panhard rod(poly/rod end)
-Spohn adjustable torqe arm tunnel brace mount(poly bushing)

BRAKE:
-C5 brake kit conversion
-Braided lines
-Hawks hps brake pads(4 corner)
-18"X9.5" all black ZR1 wheel
-285/35zr18 Falken GRB FK-451

MISC:
-Tune pcm by MADZ28 with lt4 knock module
-WS6 store 6.5" short stick with hurst leather shift ****
-MBA stainless steel gauge bezel
-MBA aluminium black radiator shroud cover
-ABS delete/TCS delete/AC delete/AIR delete
-Tuner cat with laptop
-FAST wideband double bank with rpm module kit

 

what brand of o2's? ..

anddd didn't i see in another port that you were running an opti from all_ignition ?

 

AC/DELCO o2 sensor

And yeah im running a all ignition opti.And this is not a problem.I ve tried 4 opti(2 msd,2 ac/delco)and all those problem are still there.

 

hmm.. just wondering. My all_ignition one was defective out of the box. Did all kinds of weird crap including run like crap and eat fuel like crazy. ummm. Have you tried loading a stock LT4 tune and see what happens?

 

I diddnt found a stock lt4 tune but i ve tried a stock lt1 tune calibrate for my 32 injectors and no change at all.

 

hmm.. so it can't be pcm related. hmmmmmmmmmmmmmmmmmm. how's fuel pressure? how old is your fuel pump?

 

Pressure has been test a couple of times and its perfect.The has also less than 6000miles.

 

no trouble codes right?

 

That would be too easy

No code

 

could i take a look at the datamaster file?

 

Shoot me your email buddy