05+ cars you mean04s have the access door in the trunk
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03-26-2014
05+ cars you mean
03-26-2014
Well right... mine is an 05 so does that mean I am screwed with the easy access door?
03-26-2014
Best to check your trunk just to be sure
03-26-2014
I have only personally worked on an 04 FP. Thanks for the clarification RED. Drop the tank then and call it a day
Edit : why would gm change this . . . . just to piss me off thats why
Originally Posted by 2007GPGTSC
03-26-2014
I suppose I could. I would need to take all of my subwoofers and crap out. I will probably just test the fuel pressure first before I go all crazy on it. I am not super smart on these cars anyway so where is the best spot and how do you check the fuel pressure. I hate messing with gas lines.
03-26-2014
If I am not mistaken theres a port on the FPR not sure tho I have honestly never looked for it
Edit : I believe its called the fuel pump schrader valve test port and I lied its on the fuel rail . . . google is your friend
Last edited by 2007GPGTSC; 03-26-2014 at 12:26 PM.
Originally Posted by 2007GPGTSC
03-26-2014
Schroeder valve should be on the fuel rails
03-26-2014
here is some search results I found on n/a 3800
headers/hv3,stock tune
http://www.gpona.com/forums/04-08-gr...un-t27590.html
stock n/a 3800
http://www.gpona.com/forums/3800-eng...ts-t26856.html
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
03-26-2014
Hey thinks for the links Grimsin! So what I got from that is I am about half way between stock and what I should be at. Tim at ZZP was kind of surprised I was running ZZP headers on a N/A car since the flow is insane from those things. That is probably what is causing my issues.
03-27-2014
still 1st link the guy got 38whp more with the exact same setup as you and thats without a tune. that second link shows a stock 3800 pulling the same whp as your modded one
i got SD headers so I believe my primaries are smaller then yours, but I doubt the extra flow is maxing out your injectors or making you stutter/bog etc.
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
03-27-2014
Why do you suspect fuel pressure issues? Your afr was quite flat.
03-27-2014
ask this guy stuff, he knows his shiz!
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
03-27-2014
I dont really suspect it myself but the owner of the tuning shop said it would just be something to check since my IDC hit 117%
03-27-2014
Your IDC theroeticly hit that number however you need to verify that their equipment is right. listen to what dh and snow said.
I can also vouch that if you scan a 3800 with the LSx config it will read wrong. They need to readress and Dyno again.
03-28-2014
can the shop hook up a scope to one of the injectors and monitor the IPW when its on the dyno?
look for it to "flatline high"
which would indicate 100% IDC
if they have a good digital logging scope, then they could actually find out the actual IPW at the injector.
03-28-2014
I dont know. I got my appointment setup with ZZP in April. We can dig into it there and see what it will take to get me running right
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