Hey guys, I dynoed my car today and had to take it off after the first pull.
For some reason my car is reaching 14.8 / 15.0 air/fuel as most of you can tell thats not got at all.

From what I was the vortech is supposed to run richer than leaner.

I am going to take car to tune on monday, but other than that what do you guys think that is going on with my kit/z.

I have factory injectors, iridium one step colder plugs, 15k miles, and vortech kit is brand new.

A friend told me it can be my auxiallry fuel pump the kit brings, which is a walbro 255. What could happen he said is that the aux. fuel pump is not working at all, thus not sending the fuel when its needed?

Any info will be greatly appreciated

Thanks

 

also I am on factory tune for the split second and it has never been touched, which is weird to me bacause its supposed to run rich?

hope that helps with ur answers

 

First...who did the install ? Did you take it back to them ? Im guessing either your aux. fuel pump is wired wrong . Or the settings in the R4 program have been changed and isnt coming on when it should . Don't bother taking it to get tuned till you find the problem

 

ok thanks for the reply booger, I did the install.

The aux. fuel pump is wired correctly as I checked it today.
It comes on when the car is in high rpm levels such as boost etc..

And the R4 program has never been touched, still has factory seal from vortech for the serial port.

Let me know what you think....

 

do you have a copy of the dyno with the A/F ? If you do...can you post it ?

 

PM Sent

 

sent my email address

 

You got mail!!

 

nothing yet

 

One more thing. Are you sure your fuel lines are right? Go over them once again and check. Dumb question but have you checked the fuel pump fuse?

 

Still no email...AOL sucks for sending out email to the competitor

 

Yes fuel lines are correct and fuel pump works, well both of them
as for the aux. fuel pump it turns on during boost levels, from which ive heard its what it supposed to do.

 

booger, check ur PM

 

Two things, verify the A/F on the dyno. If you made a full pull without any trouble, i'd suspect the sniffer is fubared.

 

doubt it, about 20 cars ran that day... i was the 2nd

 

Double check the vac line attached to the FMU..

 

checked yesterday, thanks for the info

I will redyno today / tune I'll keep you guys posted