Questions for the turbo dudes!
6 lbs should still feel like a small freight train... Perhaps a bad wire, or a wire is arcing..that happened to me on and I had similar output. After a thermo test, do the basics and consider plugs/wires and unlikely, but possible coil. As stated above, the A/F is off if not all cyl's are firing. Ditch the TB for a nick williams unit, they dont lose boost through the shaft like most (TPIS/MTI is the worst leaker through the shaft BTW).
something is a miss.....BRFPR is what i have...hose off is 58psi and i think cruising it is around 48-50psi with the hose on of course. i use 60# inj as well....your IFR should be something like 67-69 all the way across the IFR table since you have the brfpr. lower your PE ENABLE rpm to something like 2800. You need to hook up with someone who has some experience with a turbo ls1, will save you lots of headaches. Log misfires also..might be your problem.
I have zero misfires. I didnt do a cylinder breakdown, but total misfires was 0. I believe thats what my IFR table looks like.. 67-69. Ill change the PE enable too. Didint think about that one. The whole turbo thing is easy, just all the little things that are tedious. Im very mechanically inclined so working/ fixing/ figuring it out isnt a problem.
6-7 Psi should pull strong, also you're right, that turbo should spool much quicker. Where are your wastegate vacuum/boost lines connected? Are you runing the WG from the turbo or the Manifold?
BTW that turbo kit you sold to Matt (my Room-mate) is up and terrorizing the streets around here! He's running 60's also, no bucking... It does sound like a lean buck.
BTW that turbo kit you sold to Matt (my Room-mate) is up and terrorizing the streets around here! He's running 60's also, no bucking... It does sound like a lean buck.
Originally Posted by cablebandit
are you auto or 6 speed? sure misfire detection is on? you should get some misfires at idle if its on
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by Ryan K
6-7 Psi should pull strong, also you're right, that turbo should spool much quicker. Where are your wastegate vacuum/boost lines connected? Are you runing the WG from the turbo or the Manifold?
BTW that turbo kit you sold to Matt (my Room-mate) is up and terrorizing the streets around here! He's running 60's also, no bucking... It does sound like a lean buck.
BTW that turbo kit you sold to Matt (my Room-mate) is up and terrorizing the streets around here! He's running 60's also, no bucking... It does sound like a lean buck.
All my references are from the intake mani.
Wires 3 & 5 were dead shorted to the headers... even through the boot protectors. Now Im going to use the boot protectors with heat sheilding over them 
I have the LPE GT2-3
I have the LPE GT2-3
It sure runs TONS better N/A and the cruise A/F bounces between 14.6 and 15.. averages ~14.8. WOT A/F dropped down to 10:1, but its probably lower than that. I think the WB only goes down that far. I also think Im leaving ALOT on the table with the really fat A/F and the CB. I wonder what I would pick up with a good A/F and open exhaust. It sure grabs some serious attention since I just got back from a local care show... gets to 150 pretty damn fast too, but it doesnt break the tires loose on spool up.
For the wire fix ( I had just boot protectors), I have the boot protectors, heat sheild and I tried to zip tie them out of the way.
I also have a weird stumble at a certain time when "playing around", but Ive read thats its sort of common with the 60# injectors.. something about DFCO.
For the wire fix ( I had just boot protectors), I have the boot protectors, heat sheild and I tried to zip tie them out of the way.
I also have a weird stumble at a certain time when "playing around", but Ive read thats its sort of common with the 60# injectors.. something about DFCO.
TECH Apprentice
Joined: Jul 2004
Posts: 374
Likes: 1
Nutshell… 6psi should be a 35-40% increase in hp. Adding a turbo should if anything smooth out the exhaust tone, and might decrease responsiveness/chrispness before it gets into boost. A missing or not firing cylinder should cause the O2’s to go rich, so if your AFR’s are still OK, real world the thing is running lean (which will cause some bucking and even backfiring through the intake…)
Running rich usually doesn’t cause any issues besides some softness in the response (and exhaust note…), so usually your best bet is to get it where you know it’s rich and start leaning out from there till it gets “crisp” (the sound chages as well as how the engine acts), but in your case it sounds like you’ve got some issues to hunt down before spending much more time tuning it.
Running rich usually doesn’t cause any issues besides some softness in the response (and exhaust note…), so usually your best bet is to get it where you know it’s rich and start leaning out from there till it gets “crisp” (the sound chages as well as how the engine acts), but in your case it sounds like you’ve got some issues to hunt down before spending much more time tuning it.
lean it out or up the boost 
I have had mine so rich before that it wouldnt do a burnout.
Those plug wires were killing you obviously...bet she feels good now even with the fat a/f.
I have had mine so rich before that it wouldnt do a burnout. Those plug wires were killing you obviously...bet she feels good now even with the fat a/f.
oh, it feels good. It still spools later than I thought it would. I dont think I hit full spool until the lat 3000s. Could just be i the tuning. I have just a basic tune done.