Drivetrain 03' Upgrade

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Oct 18, 2005 | 11:45 AM

chevyspy

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1st Gear

Joined: Oct 2005

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03' Upgrade

I am in the process of purchasing a 03' MCS. Does anyone know what is different from 03' to 04' to get the extra few h.p.? I have been told it is a different pulley and airbox. I am looking to upgrage the 03'. Thanks in advance for the help.

Oct 18, 2005 | 11:48 AM

Riddler

2nd Gear

Joined: Jul 2005

Posts: 84

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From: Denver, CO

No difference between 03 and 04, as far as I know. 05 MCS has 5 more horses.

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Oct 18, 2005 | 11:58 AM

chevyspy

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1st Gear

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I don't want to **** anyone off cause I am new but that extra h.p. in the 05's is due to computer re-map, different blower, exhaust, etc. right?

Oct 18, 2005 | 12:31 PM

MGCMAN

6th Gear

Joined: Jul 2002

Posts: 4,293

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From: Cincinnati, Ohio

Quote:

Originally Posted by chevyspy

I don't want to **** anyone off cause I am new but that extra h.p. in the 05's is due to computer re-map, different blower, exhaust, etc. right?

Computer remap. But what I recommend is the following:

1) 15% reduction pulley on supercharger
2) Cold Air Intake
3) Cat-back exhaust
4) Aftermarket ECU upgrade either via UNICHIP or MTH