Problem with my supercharger/engine.
Originally Posted by JPI
If you are running 6 psi the booster pump isn't needed. Get a scanner and check out your Long term fuel trim. Make sure it doesn't go past 10% .
JPI
JPI
Lexus Champion
Joined: Jun 2003
Posts: 2,079
Likes: 2
From: Texas
Originally Posted by trbopooh
nope. you need to run 310 injectors. i've already asked rod millen.
JPI
JPI,
I see what you mean. If he is using a booster pump no larger injectors needed but if he not running a booster pump and has stock injectors will the stock ECU and injectors handle 6psi??
How much can you raise the fuel pressure via a booster pump before it wears out or over works your injectors?? 40%?
trbopooh,
your talking about 2 systems. The S/C kit that Rod Millen sold they sold w/ 310 injectors to handle the fuel issue. The LMS S/C uses a booster pump to deal w/ the fuel issue I believe that is the one mikeyboy has.
I see what you mean. If he is using a booster pump no larger injectors needed but if he not running a booster pump and has stock injectors will the stock ECU and injectors handle 6psi??
How much can you raise the fuel pressure via a booster pump before it wears out or over works your injectors?? 40%?
trbopooh,
your talking about 2 systems. The S/C kit that Rod Millen sold they sold w/ 310 injectors to handle the fuel issue. The LMS S/C uses a booster pump to deal w/ the fuel issue I believe that is the one mikeyboy has.
Lexus Champion
Joined: Jun 2003
Posts: 2,079
Likes: 2
From: Texas
I don't think we will have any issue at 6 psi at with stock injectors. We had to lean the 310'cc out quite a bit because it was funny very rich at top end. Otherwise the stock computer doesn't like that Long fuel trim going more than - + 10 %. That is the rule of thumb to tune these things.
JPI
JPI
Lead Lap
Joined: Feb 2001
Posts: 505
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From: hell
Originally Posted by GILLEXUS
trbopooh,
your talking about 2 systems. The S/C kit that Rod Millen sold they sold w/ 310 injectors to handle the fuel issue. The LMS S/C uses a booster pump to deal w/ the fuel issue I believe that is the one mikeyboy has.
your talking about 2 systems. The S/C kit that Rod Millen sold they sold w/ 310 injectors to handle the fuel issue. The LMS S/C uses a booster pump to deal w/ the fuel issue I believe that is the one mikeyboy has.
which one are we discussing??? your v8 right??? haven't seen a sc'd v8 run only booster pump or fpr only. please correct me if i'm wrong.
Lead Lap
Joined: Feb 2001
Posts: 505
Likes: 0
From: hell
Originally Posted by JPI
I don't think we will have any issue at 6 psi at with stock injectors. We had to lean the 310'cc out quite a bit because it was funny very rich at top end. Otherwise the stock computer doesn't like that Long fuel trim going more than - + 10 %. That is the rule of thumb to tune these things.
JPI
JPI
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Originally Posted by trbopooh
which one are we discussing??? your v8 right??? haven't seen a sc'd v8 run only booster pump or fpr only. please correct me if i'm wrong.
Sorry for any confusion.
Sounds like mikeyboy has a booster pump w/ his set-up and is using LMS's I-manage to conrol it.
Lead Lap
Joined: Feb 2001
Posts: 505
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From: hell
Originally Posted by GILLEXUS
I thought your comment about 310 injectors was refering to mikeyboy's GS300. I was talking about his GS3 needing a booster pump or not w/ stock set-up
Sorry for any confusion.
Sounds like mikeyboy has a booster pump w/ his set-up and is using LMS's I-manage to conrol it.
Sorry for any confusion.
Sounds like mikeyboy has a booster pump w/ his set-up and is using LMS's I-manage to conrol it.
Originally Posted by trbopooh
nope. i know he has a gs3 running lms sc. i thought we were changing gears and talking about the gs4xx when you chimed in. didn't want to get people confused with different setups for the gs3 and gs4xx.
JPI,
I'm curious to know how much can you raise the fuel pressure via a booster pump before has any adverse affect on your injectors. Say for example ,if your stock injector are at 45psi would it be safe to safe to increase it by 50% to 67psi w/o over working the injectors??
I'm curious to know how much can you raise the fuel pressure via a booster pump before has any adverse affect on your injectors. Say for example ,if your stock injector are at 45psi would it be safe to safe to increase it by 50% to 67psi w/o over working the injectors??
Well today my car was giving me a pretty big problem 2GS3. The car at around 4800rpm's +- 5lb's of boost the car begins to like put, put, put, put rapidly, continuously, and powerless. The putting starts around 4k rpms and continues to about 4800 where it really doesn't give out any power, although i am boosting. It's almost identical to me hitting the rev limiter.
