What do you guys recommend? A performance engine using a modified TBI setup do the carb rules for the intake manifold still apply? Dual plane for low end and single plane for high end or do TBI motors prefer one over the other? Thanks

 

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A few features of the Avenger EFI are:

• Self-tuning fueling strategy tunes while you drive - Designed for the user that wants ease of use without having to be a "tuning expert"

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• Come complete with all hardware to retrofi t EFI on a non-EFI vehicle including fuel pump.

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• System can be upgraded in the future to a Holley "HP EFI System" if desired

• Small Block Chevy multi port kits come with 36 lb/hr injectors and are designed for up to 500 HP

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• Three versions of 4 bbl TBI kits available:

i wonder if this set up will work in a crossfire motor
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4bb:

http://www.holley.com/types/Avenger%...%20Systems.asp

 

former CF

 

not trying to be a dick, but read the stickies, they are very helpful, and answer all of the questions you asked, and probably many you haven't asked yet.

 

I am doing some R&D on high flow TBI injectors.

I should know by the end of the week if these work.

If you do build this, I would be more than happy to give you a set to try and let us know.

The 95 lb injectors are the 75 lb simply with higher fuel pressure.

We're looking to go over 100 lbs with 22lbs of fuel pressure.

 

100lbs at 22 PSI is not bad. The question is how short of pulse duration can this injector provide (1 mSec???)

//RF

 

I'll let you know when we're done testing. I think I can get more than 100 lbs....

 

I ran 80 lbs injs(GM2560) at 20 lbs. My VAFPR pulls it down to about 2.00 msec or 12 lbs FP at idle. I idle OL at 13.8/1. W/O the VAFPR obviously msec would be much lower. It was B4 I added VAFPR. It did cause idle issues. Other things I did in tune was to lock synch. asynch was cutting off fule. Stabilize idle by locking SA at idle. And moved idle SA higher-lower to find sweet spot. I think I went from 24 SA idle down to 17.

 

Hey Ronny

That's what I did on my 383 with 2x 85lb-HR 13301 VFPR. At idle I am pushing 9 to 10 PSI and at WOT VFPR set at 22 PSI. I set flat idle SA at 17 deg. My idle PW is about 1.7mSec close loop (not bad, relatively steady at about 750RPM). The problem is off idle, with no load where MAP = 25-30kPa with engine RPM =900 to 1800 my PW =1.0 to 1.1 which causes RPM surges (FP=9 to 10 PSI!). The darn heads are too efficient and do not require too much fuel (nice problem to have). All of this may become a non issue once I install engine into a car with torque converter providing some load.

//RF

 

off idle = more load lower MAP. So I presume you are rolling along 5-10 mph in 1st gear. I would run lock OL off idle up to 20 mph at 14.0/1 in OL tables and all cells around that rpm and MAP(VAC). May want to flatten surrounding OL cells to same 14.0 and same on flatten surround SA cells.

 

Those rules don't apply but every engine is sensitive to plenum/runner volume and length.

I'm using #231 TBI injectors @35psi on a 440hp/500ftlb 458, no vr(a)fpr.
Idle is 1.8-2ms.