Hey guys, finally got the blower on and running the gm tune and well... it is gutless from a stop... Like the thing just bogs down til about 2600 rpm or so and than she takes off pretty good. Its also stalled out a few times sitting at a red light or coming to a stop.
The car n/a was actually faster than this thing right now for the most part of 1st and 2nd gear (auto).
Im thinking maybe the injectors are really dirty (as the kit was used), maybe change to one step colder plugs, and shes about due for an oil change. What do you guys think is the problem? Also I will have some psi numbers sometime in the next day or so (just gotta hook up the gauge). It was a pretty cool night aswell so I should be making fair power... Around half way through second gear the thing just roars to life... its odd...
had a blown ecotec swapped 2000 cavy, now just an 02 Grand Am, and a 74 BMW 2002...
The GM flash runs fairly conservatively, especially fueling. Do you have a wideband installed - is it running extra rich (emphasize the "extra" with the GM reflash lol).
Don't forget that if you don't have an h/e you will run into heat soak rather quickly. If you were to get a tune with hpt done, I'm sure you would be way happier in the long run as they could remove the tq management and clean up the fuel trims better. Based off my personal experience with the gm flash on my m62 and my PnP tune from Ryan, it's night and day.
forgot to ask what other supporting mods do you have for the m62?
possibly running really rich until 2600?
its probably more a timing thing then a fuel thing. Im sure its a bit fatter, but its mainly for accel. the timing is probably pulled out of it mabye due to some low end knocking. what kind of gas do you use (be honest). ? also if you stomp on the gas how does it feel? the reason I ask is if its coming out of closed loop and running great, then it means there is most likely an issue to do with your timing trims.... or your @!#$s just dirty. run meth
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Kick azz is my boost hero!!! 
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Runnin 91 octane (seems to be the only thing I can find in my neck of the woods). After driving it for a while its not doing it as much (the injectors were sitting for a long time in some guys garage so who knows). I still have some check engine lights on so I havent been on it too much til I can get time to bring it to my buddies shop. Do you think I should check out some octane booster? I dont see that one octane point could make a difference but stranger things have happened right.
Since I have a nice long weekend starting wednesday night I think im gonna slap a new cone filter on, change out the spark plugs (which would you guys suggest), and try some octane booster.
Furthermore with the insanely hot weather we have been having here over the last week I can now tell you guys I feel the heatsoak with the blower. Anyone know of a decent heat exchanger setup or should I just suck it up and run meth like Jcavi says lol
Thanks for the input and I will keep you guys all posted
had a blown ecotec swapped 2000 cavy, now just an 02 Grand Am, and a 74 BMW 2002...
get the cobra h/e its cheap and it suppose to work really well i just purchased mines for my setup
Yeah I was running a Cobra svt H/e and cobalt filler "T" but have since upgraded to a bigger h/e and Airtronics old ice box with a dual pass. I still have the the cobra and cobalt filler laying on a shelf if your interested. As for plugs stock are fine for the stock pulley that comes with it other wise you will want to drop down a heat range and pick up some NGK LTR6IX-11 spark plugs. Your engine light might be from a random cylinder misfire, check your plug gap and set it to around .032-.035 as thats where I had to go to get rid of that code, but have your buddy scan it or swing by the auto parts store like advanced or autozone as they will scan the car for free.
I WOULD go down to atleast 1 step colder plugs from stock, if you are still using stock plugs. When you add heat to the combustion chamber from say, either forced induction or a higher compression, it's always a good idea to go down to a colder spark. My best guess would be the timing/fueling with the tune is causing the slight hesitation. Despite the tune being a GM flash, if it's a boxed tune, it's not ideal to your vehicle. Despite apparent similarities between two identically modded cars, every car is different and will need a "personalized" tune... atleast considering peak performance or dribeability. Doesn't necesarily mean the current tune is unsafe, but I would always go with a personalized tune to make sure it's 100% accurate. Another thing to keep in mind is a supercharger is obviously belt driven, so it does suck up a small amount of the engine's power to get it going... so it is always possible that you are noticing a small amount of this as well.
When a car is gutless off the line or wants to stall like that, it is more often than not a timing issue. This is the #1 issue I run into when starting up a brand new tune, getting the idle/low end timing correct so that the car isn't a swamp donkey off the line. With that charger bolted to the engine you should see next to NO decrease in bottom end torque, so it definitely shouldn't be running like that.
You sure you have that map sensor hooked up 100% properly?
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
that does make sense, however its a gm tune. we have to assume one of two things. either something was left unpluged. or its running wrong. check your lights and report back. also sweetness does bring up a good point man double and triple check all connections looking back at the symptoms that does sound like fuel more so then timing. Ive just been dealing with a car at work thats been pulling timing all over the place, and everything down to my moring sandwich is pulling timing these past few weeks.
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Kick azz is my boost hero!!! "
Heat, from a stop in the summer mine is terrible
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
i do have a question, on the throttle body adapter plate, there is a little nipple looking thing. Is that supposed to be plugged or left open depending on if you have a stick shift or auto?? i cant remember which way its supposed to be
M62 KIT for sale PM ME
Well on thursday or on the weekend the car will be getting checked out
I have a set of NGK step colder plugs that should be in tomorrow, so maybe I will get a bit of a clue as to whats going on when I take my spark plugs out.
Ran 91 octane with some octane booster, seemed to run fine. Went out to Drumhellar and started getting a wicked chug and some wierd noises. Pulled over popped the hood, made sure everything was tight, let it cool for a few minutes. Fired it up and everything went back to normal other than the sporadic power from a stop.
Hopefully just a sensor is loose, or something like that as money is tight at the moment. I know the thing is definately running stupid rich as my exhaust tip is pretty much black now. Im thinking one of the cylinders might have a fouled plug...
I think sometime next week im going to order a zzp pulley to try and bring the a/f to a decent level (from what I've heard, the tune runs rich so a 3.0 or 3.1 pulley should be alright). Before fall I hope to finish up my exhaust with a 2.4 header, get a zzp heat exchanger, and a better intake setup.
Still gotta hook up my boost gauge too, but if you seen my car... that is the last of the worries right now.
had a blown ecotec swapped 2000 cavy, now just an 02 Grand Am, and a 74 BMW 2002...
Out of pure curiosity, is that ^^^ really how your car looks currently?
Make sure they check the pins for the iat and map sensors. Mine where messed up at first and the car ran like poo
im no expert but from what i have learned theses cars with out the heat exchanger are not very happy. what you need to do to find out if realy is a tuning issue is to find some road with no cops around. Power brake the car see what it does. If the car doesnt break up when you launch it. your fine keep in mind we have automatics that how we have to launch ours try it. But make sure that dam hose by the pulley is secure and not next to the pully on the supercharger
arg, quote thing got screwed up.
I will check the wiring tomorrow after the plugs, filter and I will check the wiring
had a blown ecotec swapped 2000 cavy, now just an 02 Grand Am, and a 74 BMW 2002...
