What IDC are you guys seeing, at what boost and which injectors?

[Rafs-T-Type]

For some reason I've been as high as 90% @ 24lbs with 120's. What could cause it to be this high?

 

[Phoneguy]

That seems high unless you are in the mid 9's.

 

[Rafs-T-Type]

Yes, I know it's high...that's why I asked what would cause it to be this high I certainly don't have a 9 second car especially at 24lbs.

More info on the fuel system - Magnafuel external pump -8 feed and return, modified in tank pick-up. And set to 10.5 AFR on the gas scale.

 

[Rafs-T-Type]

Anyone?

 

[Reggie West]

Show us a power log file. If you are running 90% dc with an AF ratio of 10.5 you are running out of fuel. You will run out of fuel if you try to throw more fuel at the motor as in a lower AF ratio. Maybe it's time to think about a -10 feed line because those are some big injectors.

 

[Rafs-T-Type]

I attached the file...others are going 9's with a -8 feed and -6 return, so I don't think the fuel line is a restriction here, and running E-85 there is no need to fatten the tune, I will most likely lean it out to about 11.4. From this thread http://turbobuick.com/forums/threads/8an-feed-6an-return-how-fast-have-these-been.372218/page-2 "I ran 9.27 at 150 mph with -8 feed and -6 return"

 

[jasjamz]

Which wideband?

 

[Rafs-T-Type]

Innovate logged with powerlogger, and displayed on scanmaster.

 

[jasjamz]

lc-1 or lm-1? is it real messy and in between 9.9 and 11.o?

 

[Rafs-T-Type]

lc1...and it's not that messy anymore, the tunes been cleaned up since then but I don't have newer logs at decent boost

 

[jasjamz]

A cleaner log is a must. What model pump and fuel tank setup

 

[Boost231]

who's trans?

 

[TurboBuRick]

Jason,

Sounds like your running out of fuel. I have this modded rail here for you. Let's get together and get it going.

Rick

 

[Rafs-T-Type]

The trans is a Jimmy's. I forget which magnefuel pump I ended up getting - I think I got the 4301. The tank setup is a stock modified pickup - I forget exactly what was done do it. Rick, I hope to see you soon when I get some cash.

 

[TurboBuRick]

Your good for it. Give me a call.

 

[jasjamz]

To restrictive of a filter?

 

[Rafs-T-Type]

4" CAI - Doubt it

 

[TurboBuRick]

When's the last time you checked the filter?

RL

 

[jasjamz]

Fuel filter not the air filter LOL

 

[Rafs-T-Type]

I checked it last season...It looked - Make that they looked brand new after 2 years. I'm running the 25 and 75 micron magnafuel ones