JANNETTY RACING ZL-1 NO TUNE PULLEY ROTOFAB TESTING RESULTS

[JANNETTYRACING]

Originally Posted by Shaher elashkar

Hello ted, hope this message find you, i installed the ati 10% and k&n filter, i will have it tuned on 95 oct im curious do i need new injectors or the stock is enough?.

This is the Maximum amount of pulley you can run with stock injectors.

Tuning does make a difference.

Feel free to contact me for anything you need.

Ted.

[ODB Racing]

I'll also back up Ted here. I have his 75rwhp package and it's the absolute max you can do with stock pump and injectors. I logged mine a couple weeks ago and inj DC% is at 105% and the o2 mv's are declining slightly in 4th gear.

[JANNETTYRACING]

Originally Posted by ODB Racing

I'll also back up Ted here. I have his 75rwhp package and it's the absolute max you can do with stock pump and injectors. I logged mine a couple weeks ago and inj DC% is at 105% and the o2 mv's are declining slightly in 4th gear.

3 things affect Inj DC, Fuel pressure, COT, and Actual AFR.

If fuel pressure declines inj DC goes up to compensate.

Lower AFR numbers demand higher inj DC.

We command 11.5 AFR but unless you have a wide band AFR gauge you will not know what the actual AFR is.

Full throttle up through 4th gear will put your computer in COT or cat over temp protection fueling which is only after a certain time has expired at certain loads.

This extra fuel demand is what pushes the injectors to a higher DC.

Check these things and get back to me.

Ted.

[ODB Racing]

Originally Posted by JANNETTYRACING

3 things affect Inj DC, Fuel pressure, COT, and Actual AFR.

If fuel pressure declines inj DC goes up to compensate.

Lower AFR numbers demand higher inj DC.

We command 11.5 AFR but unless you have a wide band AFR gauge you will not know what the actual AFR is.

Full throttle up through 4th gear will put your computer in COT or cat over temp protection fueling which is only after a certain time has expired at certain loads.

This extra fuel demand is what pushes the injectors to a higher DC.

Check these things and get back to me.

Ted.

I need to see if the ECM is entering COT?

I do not have a AFR gauge. Just going by O2 mv's. They are very steady until around 86-90mph where they begin tapering off. I'm only running the 1/8 and crossing at 98mph. The car is making 12psi. I plan to log fuel pressure to see what it looks like.