Fuel Injector Cleaning

[D Rock]

I had a Dyno pull yesterday and discovered my A/F was way to lean 15/16 at WOT. Horsepower way down to approx 320rw , fuel pressure was good at the rails. Does it make sense for me to pull the injectors 42 pounders with about 35,000 miles of service and send to be cleaned and flow tested at a place like this before trying to retune. The last time this car water to air vortech was Dyno tuned ? 2005. http://www.cruzinperformance.com/fuelinj.html

[RacerX]

Injectors are one of the last items I would bother checking. You have a fuel filter basket in the tank on the pump, an actual fuel filter and then each injector itself has a little filter basket in the top. Check hoses, clean the maf sensor, check for vacuum leaks... For piece of mind, you could monitor afr and pull the electrical connetor on each injector, one at a time. The on that causes no difference may be a cuprit. Like I said though, it'd be last on the list.

[LANDY]

I would definitely strap it down on the dyno.
Something else you can do is dattalog your fuel delivery.
Fuel pressure
Fuel pump duty cycle
Injectors
Whos tune do you have in your car?

[Lignum]

Always remember pressure and flowrate are two different things :-)

[D Rock]

I would definitely strap it down on the dyno.
Something else you can do is dattalog your fuel delivery.
Fuel pressure
Fuel pump duty cycle
Injectors
Whos tune do you have in your car?
To tell you the truth I'm really not sure, never been tuned in the four years that I've owned the car. The car was first set up by Reinhart in 05 but the car might have been to another tuner before bought by me.

[D Rock]

Thanks I'll consider all of the above.

[LANDY]

When I bought my car, it was already supercharged.
I found lots of things that were causing problems on my fuel delivery.
I had my car dynoed a month after I bought the car, got it better but still had problems that were not detected by the dyno operator. Because of that and curiosity I decided to learn about the way everything works myself. Now that I know the car better I can communicate with dynotuners a lot better. Learn and dattalog the car, fix problems and tune it. If not you will be making at least a $5,000 mistake.

[RacerX]

^^^ True! I also hope that dyno guy shut it off as soon as that afr started to creep up. 15/16 afr is just plain dangerous at WOT in an sc'd car!

[Dennis Reinhart]

I had a Dyno pull yesterday and discovered my A/F was way to lean 15/16 at WOT. Horsepower way down to approx 320rw , fuel pressure was good at the rails. Does it make sense for me to pull the injectors 42 pounders with about 35,000 miles of service and send to be cleaned and flow tested at a place like this before trying to retune. The last time this car water to air vortech was Dyno tuned ? 2005. http://www.cruzinperformance.com/fuelinj.html


Since this is one of my kits you can call me, and I would stay out of WOT