E85 warning from onstar after installing auto meter wide band air fuel gauge

[HufferSS]

Originally Posted by simon.w

He ran it up on the dyno ... But didn't drive It.

So my last post...I feel like I am beating a dead horse.......but this IS a horrible tuner if he didn't run it on the street. A supercharged tune is MUCH more complex than a NA tune and it has to be run on the dyno and street tuned in my humble opinion.

I hope he didn't charge you much for this "tune."

[ron10]

i would have to agree with everyone else.you can s/c,put a cam in,turbo it,or what ever,the secret to a car running it's best,is a good tune.your installer may be very good with mustangs and may be a super guy,but sounds like he is not that familiar with our cars.that is why ted at jannetty and the other sponsors on this forum are very good at what they do.they did all the leg work and testing before they touched any of our cars.

[bigsquirrel]

+1 bad tune. A street drive and a little data logging is a must for a good tune. My tuner beats the $##$ out of my car on his test drives (Me in the passenger seat)

[SC2150]

Originally Posted by HufferSS

If it's done it since the tune...then the tune is wrong. Misfires don't have to be from being lean and I think yours is actually rich. 10 on your AF gauge is EXTREMELY rich.

I'd pull the plugs and see what they tell you. I think you're going to find that your tuner set it rich to be safe for pump gas....many tuners think running it hog rich makes it safer....reality is...not so much.

100% agree. If your showing 10:1 AF your drowning the spark as well as washing down the cylinders.....not good at all.

[simon.w]

Originally Posted by HufferSS

If you were going to have a custom tune then why did you buy the Whipple tuner? Just curious.

I did the install myself, and originally had a stock exhaust. Was going to leave it at that, but then couldn't help myself and with the LT's and 3" exhaust.

[simon.w]

OK ... So I'll take the car back and ask him to tune with drive.

I'll still do the SCT-X3 with Ted ... At least then I'll know that it it is as good as it can possibly be. Kicking myself that I didn't do this in the first place.

[BLACK10]

Bad tune!!

[SlowLS3]

Originally Posted by SC2150

100% agree. If your showing 10:1 AF your drowning the spark as well as washing down the cylinders.....not good at all.

Do you have a fuel guage, what is the fuel pressure at wot, do you have a boost reference controlled fuel regulator, these are 2 things required to monitor fuel at all times because you can have a fuel pump that is not supplying enough fuel at WOT and is set rich to compensate for that, a boost reference regulator open the regulator for more fuel supply at higher boost.
The fuel guage should mentained 58/57 psi at normal driving and at wot it should go up to around 60psi.
Before taking the car back to the tuner you should try and install these 2 things if you don't have it, it will help the tuner tune your car better, even change the spark plugs to a new set NGK TR6 with a .025 gap, these are the recomended spark plugs for F1 application.

[simon.w]

Originally Posted by SlowLS3

Do you have a fuel guage, what is the fuel pressure at wot, do you have a boost reference controlled fuel regulator, these are 2 things required to monitor fuel at all times because you can have a fuel pump that is not supplying enough fuel at WOT and is set rich to compensate for that, a boost reference regulator open the regulator for more fuel supply at higher boost.
The fuel guage should mentained 58/57 psi at normal driving and at wot it should go up to around 60psi.
Before taking the car back to the tuner you should try and install these 2 things if you don't have it, it will help the tuner tune your car better, even change the spark plugs to a new set NGK TR6 with a .025 gap, these are the recomended spark plugs for F1 application.

I dont have a fuel pressure guage, however it has the MSD fuel pressure booster supplied with the whipple kit and it also has the plugs supplied with the kit and gapped to the whipple spec.

[hypurone]

Originally Posted by simon.w

OK ... So I'll take the car back and ask him to tune with drive.

I'll still do the SCT-X3 with Ted ... At least then I'll know that it it is as good as it can possibly be. Kicking myself that I didn't do this in the first place.

Go see Mike @ Haddad Motorsports in Inglewood, problem solved...

http://www.haddadmotorsports.com/

Not taking anything away from Ted at all.

[Rhino79]

Mid 11 s would be a good safe Afr.

[grocerygetter]

fyi...you can monitor fuel pressure on the obd port as well.

[SlowLS3]

Originally Posted by simon.w

I dont have a fuel pressure guage, however it has the MSD fuel pressure booster supplied with the whipple kit and it also has the plugs supplied with the kit and gapped to the whipple spec.

You need a fuel guage, its a must when supercharged, its the only way you can monitor your fuel supply, and additional guage which is important but not a must is an air/fuel ratio guage.
That MSD is a boostapump to supply more volts to your factory pump to increase the fuel pressure but who knows how effecient its working. Transportation of spark plugs can change the gap so its very important to recheck the gap, also while tuning the car, it goes rich before the correct adjustment and that can fowl the new plugs, so try a new set of plugs with correct gap.
A set of plugs have no such thing like its new while its in a car because everytime the car run too rich it can fowl the new plugs in just 20 mins and that can be a big issue believing its new.

[boostedyards86]

Originally Posted by SlowLS3

You need a fuel guage, its a must when supercharged, its the only way you can monitor your fuel supply, and additional guage which is important but not a must is an air/fuel ratio guage.
That MSD is a boostapump to supply more volts to your factory pump to increase the fuel pressure but who knows how effecient its working. Transportation of spark plugs can change the gap so its very important to recheck the gap, also while tuning the car, it goes rich before the correct adjustment and that can fowl the new plugs, so try a new set of plugs with correct gap.
A set of plugs have no such thing like its new while its in a car because everytime the car run too rich it can fowl the new plugs in just 20 mins and that can be a big issue believing its new.

I completely disagree. AFR is much more useful of a gauge and is a thousand times more important than line pressure. Fuel gauge obviously is necessary once converted to return style or if your trying to over work a dead head system. If the car is setup properly the only time this would need to be constantly monitored is in a race only application, which i'm sure is not the case here.