Pulley Changeover to a 3.4"
Senior Member
True Car Nut
Joined: May 2003
Posts: 3,022
Likes: 1
From: Holt, MI & Lima, OH
The 90 mph hesitation is the PCM dumping the boost valve and this can be corrected by bypassing the solenoid.
The difference in torque is impressive with the 3.4" but I would recommend going to the 3.25" with a cone filter.
The difference in torque is impressive with the 3.4" but I would recommend going to the 3.25" with a cone filter.
2) I would definately NOT install a 3.25 with just a Cone Filter. You will get SO much Knock Retard you will be slower than with the 3.4. Install a 3.4, then once you get enough mods, and verify with a scan tool that you are getting 0KR, go to a smaller pulley then run the scan tool and see how much KR you are getting then. If it is less than 2KR then you will probably have more power leaving that pulley on, if it is more, then go to the next size bigger pulley.
Junior Member
Joined: Jun 2002
Posts: 0
Likes: 0
1) How do you bypass the solenoid, and I am assuming this still needs to be done on a 2000 SSEi?
2) I would definately NOT install a 3.25 with just a Cone Filter. You will get SO much Knock Retard you will be slower than with the 3.4. Install a 3.4, then once you get enough mods, and verify with a scan tool that you are getting 0KR, go to a smaller pulley then run the scan tool and see how much KR you are getting then. If it is less than 2KR then you will probably have more power leaving that pulley on, if it is more, then go to the next size bigger pulley.
2) I would definately NOT install a 3.25 with just a Cone Filter. You will get SO much Knock Retard you will be slower than with the 3.4. Install a 3.4, then once you get enough mods, and verify with a scan tool that you are getting 0KR, go to a smaller pulley then run the scan tool and see how much KR you are getting then. If it is less than 2KR then you will probably have more power leaving that pulley on, if it is more, then go to the next size bigger pulley.
2) Thanks for the advice. I have reconsidered and agree with you.
why are you worried about waiting to do exhaust? I could understand headers maybe but the exhuast system itself even with a high flow cat makes a huge difference with a CAI and that definitely won't void your warranty....believe me I even asked specifically about that.
Jason
Jason
I just might do that.
Member
Posts like a V-Tak
Joined: Aug 2002
Posts: 95
Likes: 0
From: New Jersey
Re: Curious
Originally Posted by jasonapr78
Streetracer,
I have a 2001 SSEi and am about to start my modifications myself. I'm having a custom exhaust done with a high-flow cat, CAI, and a 180 T-Stat. I expect to see a nice gain in HP and torque and haven't looked seriously yet into changing the pulleys although that would probably be my next step after I get headers installed. My question to you is were you completely stock when you threw in the 3.4"? I would obviously have the exhaust, cat, 180 t-stat, and CAI done at the very least so I would expect to see a more increase in power than you did if you only have the pulley? Also, do you have any existing warranty on your car? I have warranty (bumper-to-bumper) up to 150,000 and I'm sitting on 52,000 right now so I wanna be careful and not void my warranty...that'* why I haven't seriously considered the pulley yet. Just let me know..thanks!
Later,
Jason
I have a 2001 SSEi and am about to start my modifications myself. I'm having a custom exhaust done with a high-flow cat, CAI, and a 180 T-Stat. I expect to see a nice gain in HP and torque and haven't looked seriously yet into changing the pulleys although that would probably be my next step after I get headers installed. My question to you is were you completely stock when you threw in the 3.4"? I would obviously have the exhaust, cat, 180 t-stat, and CAI done at the very least so I would expect to see a more increase in power than you did if you only have the pulley? Also, do you have any existing warranty on your car? I have warranty (bumper-to-bumper) up to 150,000 and I'm sitting on 52,000 right now so I wanna be careful and not void my warranty...that'* why I haven't seriously considered the pulley yet. Just let me know..thanks!
Later,
Jason
The intake, exhaust, and t-stat will also keep engine cooler, which will prevent knock retard and allow increased timing. This is usually not much of a problem with 3.4" pulley - but varies based on car and conditions.
You may want to use SLP parts if you do not want void warranty, or least maintain net coverage.
SLP offers a warrany which covers voided portions of GM warranty. They are also essentially an offical GM tuner. You use to be able to order GTX for Grand Prix and FireHawk for Firebird packages right from the dealer. GM would ship car to SLP for installation!
Thread
Thread Starter
Forum
Replies
Last Post