05 c6 tune? Fuel Injectors?
Thread Starter
1st Gear
Joined: Aug 2018
Posts: 1
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From: Eden Prairie
05 c6 tune? Fuel Injectors?
Hi all. Long time lurker, first time posting.
I’ve got 05 c6 m6 with ARH 1-7/8, CAI and a tune by Doug Rippie Motorsports. 389 hp
My next upgrade was going to be Fast 102mm Intake manifold and throttle body. Would I need or should upgrade fuel injectors as well? Should I have the car tuned again after installing IM and TB? What kind of gains should I be expecting and is it worth it?
Thank you and I appreciate all of your feedback.
I’ve got 05 c6 m6 with ARH 1-7/8, CAI and a tune by Doug Rippie Motorsports. 389 hp
My next upgrade was going to be Fast 102mm Intake manifold and throttle body. Would I need or should upgrade fuel injectors as well? Should I have the car tuned again after installing IM and TB? What kind of gains should I be expecting and is it worth it?
Thank you and I appreciate all of your feedback.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
As long as your injectors have a good spray pattern and are not clogged up, there is no need to replace them ... How many miles do you have on the injectors that are in there now?
And you will not benefit at all by going to higher flow injectors unless your stock injectors are operating above 90% duty cycle (which, with your mods, your not even close to 90%).
Hopefully someone else can give you info about the benefits of a Fast intake manifold and throttle body on your LS2.
And you will not benefit at all by going to higher flow injectors unless your stock injectors are operating above 90% duty cycle (which, with your mods, your not even close to 90%).
Hopefully someone else can give you info about the benefits of a Fast intake manifold and throttle body on your LS2.
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
Nice gain in power by replacing the LS2 intake with a Fast 102, I believe a little clean up porting will help it as well. 102 TB's are very challenging with some tuners & the improvement won't be as dramatic as the intake. My suggestion would be to talk with your tuner about the large TB as it will have to be tuned.
If you go with a larger TB you will have to look @ your cold air intake, you do not want to have your large TB choked by a small cold air intake.
The LS2 injectors will handle well over 500rw maybe even close to 600rw, no money needs to be spent there.
Consider a gear change, going to 4:10's will make the biggest bang for buck you can do. Bonus is usable 6th gear.
If you go with a larger TB you will have to look @ your cold air intake, you do not want to have your large TB choked by a small cold air intake.
The LS2 injectors will handle well over 500rw maybe even close to 600rw, no money needs to be spent there.
Consider a gear change, going to 4:10's will make the biggest bang for buck you can do. Bonus is usable 6th gear.
