getting my car tuned.
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You can buy a pre-tuned ecu for like ~200. You might even be able to find a self-flash kit for the ecu's to do your own tune. Try www.clubgp.com/ or www.grandprixforums.net/.
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From what I understand a pulley should only be done after headers and good exhaust. You just end up boost stacking and causing unnecessary heat and knock. You wont blow the motor up but it probably would be slower or no faster.
You say your replacing pistons? Theres a good chance the pulley caused that. Also, how big is the pulley?
I used HPtuners to tune my firebirds NA 3800 ECM to supercharged tune when I stuck the GTP motor in it. It isnt hard to figgure out and the only bad part is the $500 entry cost. But if you look at it you get a universal OBD2 code scanner, can check for knock all the time, can change stuff for free once you license it. I havnt messed with spark or anything on mine but thats just because its winter and I dont need any more power than it has right now. I went in knowing nothing but im confident in my abilities in it now. Sorta, hahaha....
Essentially id suggest buying HPtuners, it will come in usefull in the future. Or you can drive to Minneapolis and have CJtunes tune it for you. Its like $300 but ive never heard anything bad about him.
Whats fuel injection?
Stuck with buick V6's.
81 Cutlass- Drawthrough turbo 6
97 Firebird- FWD motor turned the right way, Supercharged 3800 -
yea, its a 3.4 pulley, and it deffinatley did the damage for sure. he had no exhaust mods besides a u bend delete. its getting headers when the heads go back on this weekend if they show up on time.
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I have never heard the header thing before, I saw tons of guys with pulleys on stock cars with no issues...and they didn't go slower. There must be some new information out lately since I used to be a w-body follower. The 3.4 pulley is the largest one you can buy isn't it? I think the stock is what, 3.6? That V6 with headers and exhaust = nastiest sound ever. Gross.
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Stock pulleys are 3.8" and make like 6-7PSI. 3.4's are good for 10-11PSI. They make a 2.55" pulley actually. I make about 5PSI on my 3.8" but my blower has high milage and I have good exhaust so its not crazy to loose 1-2PSI just making it flow better aparently.
I asked about that pulley Vs. header thing seeing so many cars with 3.4" pulleys and so few headers a few months ago on a GP board and 15 or so people said headers and nobody said pulley. The overall message was "only people that dont know what they are doing put pulleys on before headers."
It doesnt suprise me that a 3.4" would damage the motor if the previous owner ran 87 and stock exhaust. I see a bit of knock on a 3.8" and good exhaust on 89 so more boost, less flow and worse fuel would possibly cause it.
Whats fuel injection?
Stuck with buick V6's.
81 Cutlass- Drawthrough turbo 6
97 Firebird- FWD motor turned the right way, Supercharged 3800 -
No I get the idea behind the headers, it's no different than exhaust and a boost controller on a turbo car...just questioning the level of detriment to the motor in that case..especially since they are pretty stout motors. But 87/89 is a good point, I guess I just assumed(you know what that does lol) most people ran 91+ in there anyway.
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no this guy didnt run 91. i thing he ran cheap 87 or what ever was the cheapest. and yea, from all the reading i can find, is if you dont do headers your an idiot and it will blow. well, this guy didnt header and it had nasty problems. and stock pulley is 3.8, and theres some small pulleys as far down as 2.8 tht i know of. but you almost have to be intercooled and camed for that i think.
oh, and im also getting 1.9 rockers i think. in a few months anyways.
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ok well ive tried to post a few pics, but it wont let me for some reason. heres a link to them though for thhose who care. some one can post them here if they have time also
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I'm usually a pretty diplomatic kind of guy, but you sound like an asshole, especially in that other thread. Please don't flip that car and it's problems to some unsuspecting new owner.
Fix what you can, do it right, and disclose the rest.
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more then likely who i sell it will not take care of it and will have it blown up in 3 months anyways. no matter the condition of the car. and i think ive decided to keep it for my self. im kinda starting to like it. if it blows in 6 months or a year of however long it lasts, ill put in a new motor, but i jjust want to get it going cheaply right now. and putting 2 new pistons is the cheapest way to go.
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well i broke a ring on the install saturday, so now im waiting for the new set to come in, then this weekend it "should" be going!
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