Do I need a Comptech Diff and a new Exhaust?
Thread Starter
Joined: Apr 2005
Posts: 2,282
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From: Boca Raton, FL
Do I need a Comptech Diff and a new Exhaust?
Right now I have:
ACT Stage I Clutch Kit
Toda Racing Flywheel
Richmond 4.57's
Spoon N1 Exhaust
Spoon Test Pipe
I just purchased:
Vortech S/C Kit --> shipped, on its way
RC 650 cc Injectors
4.25" Pulley
AEM EMS (will buy one as soon as I find a used one)
My question is:
DO I NEED A COMPTECH DIFFRENTIAL?? OR WILL THE STOCK BE FINE WITH THIS KIND OF POWER.
DO I NEED A BIGGER EXHAUST THAN SPOON N1?? SPOON'S PIPING IS NOT THAT WIDE. IWAS THINKING IF A T1R 70 MM WILL BE BETTER OR NOT?
THANKS...
ACT Stage I Clutch Kit
Toda Racing Flywheel
Richmond 4.57's
Spoon N1 Exhaust
Spoon Test Pipe
I just purchased:
Vortech S/C Kit --> shipped, on its way
RC 650 cc Injectors
4.25" Pulley
AEM EMS (will buy one as soon as I find a used one)
My question is:
DO I NEED A COMPTECH DIFFRENTIAL?? OR WILL THE STOCK BE FINE WITH THIS KIND OF POWER.
DO I NEED A BIGGER EXHAUST THAN SPOON N1?? SPOON'S PIPING IS NOT THAT WIDE. IWAS THINKING IF A T1R 70 MM WILL BE BETTER OR NOT?
THANKS...
Joined: Oct 2000
Posts: 9,033
Likes: 21
From: South of the pier, Huntington Beach, CA
The differential is really dependent on how you drive the car. If you drive normally and don't beat on it the factory rearend should hold up fine.
I'm running over 400hp with the Amuse dual. It is the same size as the factory setup.
I ran over 400 hp with the factory exhaust. I wouldn't worry about the exhaust at this time.
I'd be more concerned about how you are going to run the 650s if you don't have the AEM. Purchasing the AEM should be very high on the list of things to do. Additionally, the 4.25 pulley is very agressive and might require more than the 650s have to offer.
I'm running over 400hp with the Amuse dual. It is the same size as the factory setup.
I ran over 400 hp with the factory exhaust. I wouldn't worry about the exhaust at this time.
I'd be more concerned about how you are going to run the 650s if you don't have the AEM. Purchasing the AEM should be very high on the list of things to do. Additionally, the 4.25 pulley is very agressive and might require more than the 650s have to offer.
Thread Starter
Joined: Apr 2005
Posts: 2,282
Likes: 0
From: Boca Raton, FL
i will be installing the 650cc's anf the pulley when I get the AEM EMS.
First I will put the S/C in. I think I will be OK with the stock injectors since I will probably have 290 wrhp with just the SC and the stuff that I already have on the car. (correct me if i'm wrong. 290 was just a guess. would it be higher? lower?)
First I will put the S/C in. I think I will be OK with the stock injectors since I will probably have 290 wrhp with just the SC and the stuff that I already have on the car. (correct me if i'm wrong. 290 was just a guess. would it be higher? lower?)
Registered User
Joined: Apr 2003
Posts: 1,848
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From: Riverview
Well you live in FL. Don't expect high numbers if you dyno in the summer. That being said, with your mods, I can see 280-290ish at the wheels on a dynojet. Stock injectors will work fine with comptech on stock pulley as long as you use the FPR comptech supplies.
What's the boost rating of the 4.25 pulley?
What's the boost rating of the 4.25 pulley?
Thread Starter
Joined: Apr 2005
Posts: 2,282
Likes: 0
From: Boca Raton, FL
Originally Posted by Scorpion,Feb 14 2006, 11:56 PM
Well you live in FL. Don't expect high numbers if you dyno in the summer. That being said, with your mods, I can see 280-290ish at the wheels on a dynojet. Stock injectors will work fine with comptech on stock pulley as long as you use the FPR comptech supplies.
What's the boost rating of the 4.25 pulley?
What's the boost rating of the 4.25 pulley?
doesn't dynojet put out higher numbers than the others?? so my car will be lower than that?
Registered User
Joined: Apr 2003
Posts: 1,848
Likes: 1
From: Riverview
Dynojet shows higher than a mustang dyno but lower than a dynopak. I'm not sure how it is in Boca Raton, but in the Tampa area all we have access to are dynojets.
Edit: And do yourself a favor...don't get caught up in the numbers game. A dyno chart from any dyno is just a referance, a gauge of how your car runs. Don't let it play with your mind or else you'll be chasing numbers instead of enjoying the car. I speak from experiance
Edit: And do yourself a favor...don't get caught up in the numbers game. A dyno chart from any dyno is just a referance, a gauge of how your car runs. Don't let it play with your mind or else you'll be chasing numbers instead of enjoying the car. I speak from experiance
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