supercharger issues

[2fst4u]

so, the car won't even idle properly after the supercharger install.
i'm thinking it's the injectors. damn ford red tops. oh well.
so, if anyone knows what voltage i should be seeing at idle for the 310cc supercharger injectors, it would be greatly appreciated. although, it may not even get me to that point to check.
does anyone know an exact part number from gm for these injectors? or for a set of cheap 310cc injectors to get this damn thing running?
(ion-insert post here)

[Ttop191]

are they the 310cc from the MP45 kit? if so, they run at 10-15 Ohms

and if you need new ones...
http://www.carcustoms.net/product_info.php?products_id=401

[Ttop191]

bump...because Ion is here and can assist with all his LD9 wisdom :D

[Th0r]

Is it reflashed yet?

[widbyj]

Should not be any 'Ford' parts at all if you did a proper install of the GM kit.

Straight out of the box it should run fine. Due to the internal bypass idle and low power runs (basically anytime you still have manifold vacuum) are exactly the same as stock - this means that the original injectors can work with the original tuning, you just won't be safe to boost it. Even with the 'proper' injectors you'll have trouble running boosted until the ECM gets re-flashed. Yes, the dealership will charge for this but you really have no choice!

Later you can play with different injectors and HPTuner if you want to explore real power. As it is now your engine should be running fine if all the parts are kosher and the tune is good.

Check your spark plugs for electrode burn. You installed colder plugs, right? Run too lean, too hot, too long and you'll fry that motor. Don't use fancy plugs...

[2fst4u]

anyone have a set of used injectors from the kit they aren't using?

[[ion] C2]

The Ford red tops are 30lb just like the ones intended with the tune.

Did you tune it or just install the mechanical stuff and try to drive it that way?

[2fst4u]

no, the computer was tuned by a guy from jbo named shifted. well, it's been forever and i can't get in contact with the guy. i wish someone could just take a look at his freaking tune and tell me what he jacked up. it's supposed to be identical to what he's running....secret cams, 2.7 pulley. i don't understand it though because at idle it's dumping fuel like the injectors are oversized.

[[ion] C2]

See.... this is why you don't use fake 2-bar tunes. The computer needs the new OS that has the extra tables for everything. I'm guessing he scaled the values in the stock PCM to simulate the tune.

It doesn't work well that way, at all. I know of at least 2-3 people on JBO who swear by it, but I know it's definitely not the proper way to do it, and leaves a huge margin for error. You need to get it flashed by the dealer so you can have the new operating system. The way the fuel injector constant is handled is different, among many other things.

Oh, why don't you just e-mail me his tune? I can look at it....

[2fst4u]

i don't have any way of getting the tune. i don't know the info he used to log into hptuners. would if i sent you the computer. could you get me up and running?

[[ion] C2]

Oh, I just need the .hpt file. I would not know what to do with a physical computer... I need an OBD-II port.

[widbyj]

If your Alero is a 2000-2003 you really should just have a dealership reflash the ECM. If I'm reading your posts correctly the tune was done BEFORE the S/C which makes it useless. Reflashing will restore normal operation AND setup the additional data tables for boosted operation, not perfect but a safe useable starting point. After that you may want to look at having a HPTune redone for your platform...

[[ion] C2]

i don't have any way of getting the tune.
Tow it

[Alerosaint]

Like everyone else say you need the orginal GM supercharger flash...but somebody was saying about real power for the supercharger...but imo you can get real decent power out of it...but dont look for power that fucking amazing cause you wont get cause the mp45 is really limited. The culpirt is heat. My best tune is 197 whp with meth. my .$02

[spyhunter]

no, the computer was tuned by a guy from jbo named shifted. well, it's been forever and i can't get in contact with the guy. i wish someone could just take a look at his freaking tune and tell me what he jacked up. it's supposed to be identical to what he's running....secret cams, 2.7 pulley. i don't understand it though because at idle it's dumping fuel like the injectors are oversized.

so you got the tune a long time ago? And THEN you got the supercharger?

stop driving the car now. Get the GM S/C tune. All of a sudden things will start to work, and you'll be making your blistering 180hp

[Th0r]

Blistering!

[[ion] C2]

I made a heart-stopping 165 whp with the supercharger

[Alerosaint]

LOLZ....i feel great I made 197 woo hoo!!!

[[ion] C2]

'cept I was on a Mustang dyno that reads like 20% lower than the local Mustang dyno, which reads 20% lower than the other typical DynoJet and the like :lol:

people who've put down 330whp run 11s lol

[2fst4u]

wow guys, definately some confusion here. the car hasn't driven since 2006. lol. the motor was blown and i was overseas. i started stock piling parts to get it up and running. in the mean time i bought some other toys, a truck and a bike. now, i've graduated and have the money to get this thing running properly. one of the things i had done was to have the computer imaged from another guys computer that was running the same setup as i had purchased. he's trusted on jbo and has done tunes for a lot of other guys. my concern is if he adjusted the fuel maps for the ford red top injectors that i had been advised to get.
as far as advise on what power adders to get, it's really not needed. all i'm looking for is getting the car to run again. i don't want or need a monster like you had built spy, just a mildly tuned grocery getter that looks half decent. hope i'm not offending anyone, it's just that i've been around this forum for a little while and already know exactly what i'm looking for. so, unless you have tuning experience (spy, ion, etc...) or have the parts i need, keep the supercharger bashing out of it. /rant

[AleroB888]

C2;520825']Oh, I just need the .hpt file. I would not know what to do with a physical computer... I need an OBD-II port.

make one of these:

http://i493.photobucket.com/albums/rr299/Gflash01/Scan-adapter-2.jpg?t=1264351657

[AleroB888]

so, the car won't even idle properly after the supercharger install.


Can you describe in detail what happens when you start up the car and let it idle?

Disconnect the battery, let it sit for a half hour or so, then start it.

Specifically, what wrong is happening when it idles? Any black smoke when you stab the gas peddle?

[spyhunter]

wow guys, definately some confusion here. the car hasn't driven since 2006. lol. the motor was blown and i was overseas. i started stock piling parts to get it up and running. in the mean time i bought some other toys, a truck and a bike. now, i've graduated and have the money to get this thing running properly. one of the things i had done was to have the computer imaged from another guys computer that was running the same setup as i had purchased. he's trusted on jbo and has done tunes for a lot of other guys. my concern is if he adjusted the fuel maps for the ford red top injectors that i had been advised to get.
as far as advise on what power adders to get, it's really not needed. all i'm looking for is getting the car to run again. i don't want or need a monster like you had built spy, just a mildly tuned grocery getter that looks half decent. hope i'm not offending anyone, it's just that i've been around this forum for a little while and already know exactly what i'm looking for. so, unless you have tuning experience (spy, ion, etc...) or have the parts i need, keep the supercharger bashing out of it. /rant

I would say if you could send me your .hpt file. That's the only way I'd be able to help you out.

[2fst4u]

alright, so the next question is how do i recover the .hpt file? i'm an electronics technician, so whatever that device is up top, how do i make it? i'll email whatever i can, just kind of walk me through getting the .hpt file off the ecu.

[2fst4u]

ion, couldn't you just put the ecu in your own car, and then get the file off of it? that way i would ship just the computer. you don't have to start your car, just put it in, and then get what you need. $$ available to anyone with help.

[AleroB888]

alright, so the next question is how do i recover the .hpt file? i'm an electronics technician, so whatever that device is up top, how do i make it? i'll email whatever i can, just kind of walk me through getting the .hpt file off the ecu.

The device up top is only an interface to connect the PCM to a scanner when PCM is out of the vehicle.

You still need HP Tuners (etc.) to read the file.

[spyhunter]

You could always fly me out for a week.

[2fst4u]

forget that, i'm coming to vegas if anybody is flying. lol. you want my computer spy? come on...everybody's doing it...

[Vic28]

If you fly him Out I bet he can tune the whole car lol... If you fly you wont take the car..

[spyhunter]

If you fly him Out I bet he can tune the whole car lol... If you fly you wont take the car..

yep!

[2fst4u]

i'm in desperate need of someone to send my ecu to. all you would have to do is to put it in your car and hook it up to hptuners. i really only need the fuel injector size verified for me. i need someone just to let me know what injectors should be in the motor. i would definately foot all of the cost. please someone give me a hand.

[Cliff8928]

I should have all the parts to hook it up to HPT like AleroB888 posted... And my HPT is licensed for any 2000 2.4 Alero.

[2fst4u]

awesome cliff! thanks a lot man. if you don't mind, pm me your contact info and we can work something out.

[Cliff8928]

Well, there's good and bad news with this one...

Good, I got the tune off the PCM in question..

http://home.comcast.net/~cliff_scott/17389265.hpt

Bad, the PCM is flashed as a 2001 cavalier, so I can't flash it unless I get the VIN changed or use 2 credits ($100).

[2fst4u]

well...so much for Shifted on jbo. that idiot jacked it up pretty good. and he took my $250 so he could buy oldsmobile credits. sounds like he ripped me off. I'll be trying to get ahold of him to get my money back. at this point, I'm going to need to have it wiped and put my vin into it. is paypal alright?

Spy, Ion, anybody else get a chance to look over the tune yet? the motor has secret cams, 370cc injectors, 58mm throttle body. those are really the only internals and things to keep in mind that i can think of. also, the supercharger has the 10lb pulley on it.

[Cliff8928]

Well, the situation could have been that he put wrote his J-Body VIN'd file to it which he already had credits for, but in order to write it at all you would need at least the single vehicle license (2 credits) for your specific VIN. But he didn't change the VIN on the tune which makes me temporarily SOL.

I don't know how much of an ordeal it is to re-flash it with your stock VIN with a tech 2, but I do know someone who has one.

[spyhunter]

you need an n-body version of the flash. the jbody one as I read in a post on a guy from gaoc.com made his gauges go out. different pinouts between the n-body and j-body ecu's i'm sure.

When i get around to finding my laptop. I'll pull out a stock file. Just so everybody knows, it's for a 5spd equipped vehicle.

[2fst4u]

What am i supposed to do with this? i really don't understand what he did. all i know is that we need to undo what he did. even if that means putting the stock gm flash on it.

[2fst4u]

bump. any luck on the tech2 flash cliff? i'm thinking flash it with my vin, write the supercharger tune, change the injector constant for my red tops, and we're all set. any thoughts?

[Cliff8928]

Ok, so I got the clean-slate official GM supercharger flash done and now the PCM has the right OS on it. There were definitely some issues that would've made the old one bad even if it did stay running (mainly trans settings were all different).

http://home.comcast.net/~cliff_scott/YC318402.hpt

[2fst4u]

at this point i've decided to go back to the stock injectors and run the stock gm tune. i'm concerned that my installation was botched by the guys that put the blower on. i'll be tearing the supercharger off very soon and double checking all of the vacuum lines. these guys definately cut alot of corners. thanks for you help guys, parts, tuning, everything. i need to get this thing running right soon.