Holley Efi or Gm Performance parts - Page 2 - Lateral-g Forums

gnx7 · #11 12-23-2012, 02:09 PM

PTAddict.... you are wrong about the Holley not being a self learning system.

I just put the Holley HP on my built LS7 427 and once the coolant temps are above 120* the WBO2 sensor starts to optimize the tune. Cold start tune needs to setup.... and mine is currently a bit rich.... but once the temp comes up the WB02 takes over and continually improves the tune and base fuel table.
You drive the car around.... upload the new improved tune after driving around to the base map by clicking on the proper software window. Keep driving it around more and then update the current tune by saving it.

A decent thread on it:
http://ls1tech.com/forums/pcm-diagno...ittle-how.html

Here is a video example:
https://www.youtube.com/watch?feature...&v=qwkqjotkDJQ

gnx7 · #12 04-23-2013, 11:43 PM

Been running the Holley HP for about 1,000 miles now in my LS7 FD RX-7 and super happy with it. Starts up with no gas pedal help and turn of the key only, even with my big cam (242/256 .650" lift) it establishes a level idle within a few seconds, and driveability is good. A large cam will never drive as nice as a small baby one.... but it does drive well. Running the v2 upgraded software.

Only real tuning needed was cleaning up the cold start and hot start settings which took some fiddling. Lean cruise for better fuel economy, and then simply running it and then updating the file as the computer makes changes the more you drive it and different loads you put on it. I did a track day at Laguna Seca the weekend before.... couldn't push it hard as I had no oil cooler and temps were skyrocketing. Did get lots of data and my computer made some minor edits from its original tune.

Attended the Shift-Sector 1/2 mile shootout in Coalinga, CA in April and on my 1st pass went 153mph with 91 octane in the tank and 315's up front/335's out back. Then added some e85 to the tank for an approx e35 blend ratio (limited by my ZR1 injectors) and added timing up top by 3* (28* up top). Went a best of 162.8mph. Borrowed my buddies 275mm tires up front and went 164.3mph due to less wind resistance. I'm guessing I'm making around 575rwhp+ as I was beating 650-700hp (flywheel) supercharged e90/e92 M3's on the top end by a couple car lengths. Their DCT (auto trans) shifted way quicker than my T56 Magnum and at every shift they would gain. Finally at the top end aero took over and I walked away. I have yet to be on a dyno with the car.
http://shift-s3ctor.com/

So I now have 2 tunes. 1 for 91 octane and then a more aggressive one for the e35 blend. I could've added more e85 to up the ratio.... as my injectors still had 10% left in them before being maxed out. The Holley tells you that your injectors are nearly at their limit. This would have been very very expensive to do with a stock LS PCM.... and it wouldn't make changes on the fly like the Holley does.

I have about 1.5hrs of total tune time on my engine. It absolutely rips.

Drove there and back from the even to the Bay Area. Did about 500 miles in 2 days with no hiccups. My buddy had his LS9 turbo FD RX-7 there and beat up a 1180rwhp Ford GT supercar. 191.5mph vs 188mph. The GT owner wasn't happy and made up plenty of excuses why he lost. ha ha ha
Aerodynamics FTW!

Getting my front fenders painted this week. Drag racing soon to see what MPH it will run.

**Flash68** · #13 04-24-2013, 08:45 AM

^^ Nice feedback. A couple things for ya..

HP says that EFI is good up to 600hp so you were/not concerned about that as your LS7 seems to be putting out quite a bit more than that. And I would think your turbo motor coming up in your Chevelle will put out over 600 too?

Also, I am interested in doing on of those half mile or mile events once my car is finished and I also will be running 315 front tires. Other than more front drag with the larger tires how did you find it tracked at high speeds with the 315?

Thanks

The WidowMaker · #14 04-30-2013, 09:17 AM

ive seen their tbi hp systems rated to 600, but ive never seen a limit on their injector versions. maybe im missing something though.

supremeefi · #15 04-30-2013, 05:07 PM

Quote:

Originally Posted by The WidowMaker

ive seen their tbi hp systems rated to 600, but ive never seen a limit on their injector versions. maybe im missing something though.

The TBI systems only hold 4 injectors. That, along with the fact that once you go too big on an injector in a TB they puddle even worse than normal.

Remember, any TBI is only as good as the manifold it's mounted on. It's subject to the same inherent distribution etc issues that a carb would be.