julio a question for you

[jamier]

Before putting the car away for the season went to the track and ran a new best 11.49 @ 119 mph but had some knock on the run only noticed it afterwards. I'd been running 11.60 all day no knock and made no changes to the car or the tune, I havn't changed the settings on the pac unit, still the way you sent it ;but my blue dial is maxed. I'm using 42.5 green stripe injectors and erics alky street chip. Rest of the motor is stock except for a few boltons. I'm wondering am I running out of injector? my o2, were in the 740 760 range, lean I know.. I tried upping the pressure from 43 to 45 on the regulator but didn't help. Haven't added wot fuel in the chip yet. Should I add more alky in the pac or do you think it's time to go to bigger injectors was thinking about the motron 60's any advice appreciated thanks.

 

[Otto J]

What are you running for a fuel pump? and was the gas getting low?

 

[jamier]

response

using a walbro pump and had 1/4- 1/2 tank 94

 

[Russ Merritt]

Should def up the fuel in the chip......that's what it's there for.

Pretty simple procedure and will give you the fuel you need.

 

[Razor]

740-760 your getting lean. You need more fuel into the motor. The injectors you have should be plenty.. but if the chip isnt telling them to open.. then your going to go lean.

Race your car with at least 1/2 tank. Dont worry the extra weight is ok since its over the back tires. But if it starves for fuel.. it will never richen up. Maybe time for a fuel filter as well. Many things on a 20 year old car.

I would first max out Erics chip and see if the O2's come up. If so.. you may want to contact Eric for a reburn with "high fuel".

Now if you ran 780-800 O2's and saw knock.. time for more nozzle.

hth