Guys i need some help, my car is at the dealer with an issue. I had them install a 2.8 pulley and 60lb injectors. That saturday when i went to move the car a couple feet to wash it in a wash bay it idled a little rough but the car moved fine in 1st without an issue. Later that day I had a tuner help me tune the car with a tune for my car.
I bought the injectors from new era performance, siemens 60lbs flowmatched with the harness that they were offering. Im running Fujita intake, zzp header, zzp 3inch downpipe, with a corsa exhaust and dual bypass option B.

The problem with the car is that while we were tuning it, we had the ecu requesting for fuel, but not recieving what it was requesting. We had a hell of a time trying to get it to tune properly so we left it alone to figure out something. The tuner decided to just leave a stg 2 tune with the ability to handle the 60lbs. Later on when i went to go leave from the dealer on saturday the car would not give any gas in second gear, it would sputter out to 400 rpm and die.

Thinking that it was the fuel filter i left the car at the dealer to take a look at it. They called me and told me that the fuel filter is inline and not external, and that they were going to go back to a gm stage 2 tune and trouble shoot from there. I just need some more ideas for them to check to fix.


Is it possible that the fuel pump has gone bad? It is an 06 and Ive only got 48,000 miles on the car.

 

fuel pump cant handle it. MAF cant either. stick to stage 2 straight up unless you are a brilliant tuner

 

lawl

 

people are running hell of a lot smaller than 2.8s and some are running bigger than 60# as well

 

The tuner is from here. And one of the 5 that know what they are doing.

 

Where the eff did you find a dealership that was willing to deal with anything aftermarket?

 

Ok if the pump cant handle it and the MAF cant either than how are others on this board running 2.8 and 60lbrs? Do i need to get a different maf do i need to get a new pump? Hell ive even seen on here people running a Stg2 tune with 2.8 so it does not make any sense to me.

CED, there dealership is very friendly to aftermarket stuff. They dont **** and moan like others.

 

You need a better tuner. 60# are EASY to tune. I just tuned a guy last tuesday and he drove the 8 hours home to El Paso with no problems. I have that much confidence in my tunes.

Wasn't me.......and does he really know what he is doing with 60#s? They aren't "Tunable" through the regular menus since they max out the values before you even hit 0-MAP pressure.

You have to change the min pulse width, and the adders and all that crap.........my guess is that he doesn't know it.

 

Check your PM if you know something that i dont let me know that way. I just dont want any flame wars or anything of that sort, I just want to get this fixed and go on driving my car.

 

Your comment is worthless

Your car is EASILY tunable with that setup. I'll get you my starting tune to help you out.

 

change the fuel filter!!! all you have to do is disconnect 3 fuel lines

 

jesus ******* christ people.

A. the fuel pump is done.
B. clogged fuel filter.

the car has a mechanical issue. not a software issue. not a tuning issue.

 

well said

 

Not ragging on the tune man, just trying to get the dealer to the right area, since for whatever reason they arent looking into those issues for some reason. I keep telling them to look at them.
Im not pointing my finger at anyone. I just want ideas, as a community and a forum here thats what is here for, to help each other out, although sometimes it turns out to be a flame war in some instances.

 

Then how does the car run fine on Stage 2? That's what makes me believe it has nothing to do with the fuel pump. I also have not seen 1 fuel pump go bad on all the cobalts I have tuned. And I can say that I have probably tuned more than any other person on this site. So it's not likely the cause. But I won't know until after I get a chance at it too.

 

the tune is peachy. the only reason why your car would freak like it did. even at 15 mph is lack of fuel.

there is nothing wrong with the injectors.





call tom!

or i can call em.

A. you were not there.
B. you didn't hear the fuel pump surging.
C. everything was set back to the way it came in. same thing happened.

 

Damn you better watch out Psykostevo, Area47's all hopped on on Mt. Dew!

If Area says you need a new fuel pump and filter, get er' done. He knows what he's talking about.

 

Maybe it's the injector harness?

idk.

 

i wouldnt say that i know what im talking about. i just happen to be one of the people who were near the car, and who actually know whats wrong with it, and why it puked itself.

there is more to this story than what is being told, but it has nothing to do with the tune itself.

 

Im not saying he doesnt know what hes talking about is all. Just like to get some ideas thats all No fingers are being pointed at anyone. Just trying to get the dealer to go direct to that area of the problem so they can be like doh! of course this is why the problem ah ha!

 

for those who don't know the issue.

here is an idea.

go out to your car. pull the fuel pump relay. move it one set of holes down. start car. give it gas. car does not rev. car will die.

this is what his car did in second gear going down ced's back parking lot.

now. for those who moved the relay down a set of holes. grab a flash light. look for the four metal female holes in there. put relay back in it's right spot.

 

The same thing happened when it went back to stage 2?

Done that a few times by mistake myself. I no longer de-pressurize the fuel system.....I just wear it. I have no patience for that stuff and I usually need to take a shower anyways. That's why I can put a stage kit on in under an hour.




Hey maybe is has the relay installed, but they forgot to put back in the 15A fuse for the fuelpump?

 

car was running fine before. for 2 hours worth of road tuning.

 

intresting thing is that CED is telling me that it is not the filter nor the pump, and that they both are in the tank. Either way ive got a few days to figure this out or i might tommorow just have them drop the gas tank and look at it anyways.

 

some pretty flamed out people if this guy is running out of gas....we all assume he isnt and are offering help ....maybe thats a wrong assumption...in the meantime you read this forum, there are many folks out there with melted pistons, so its true I think that good tuners are hard to find...and if you are worried about it stick with the GM stuff it may not be the fastest , but then it wont blow up....
I'm done...