Maf Tech Question

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Oct 14, 2005 | 05:45 PM

2kvert

Thread Starter

Burning Brakes

Joined: Oct 2005

Posts: 1,020

Likes: 18

From: Anderson SC

Maf Tech Question

Hi. I'm new to this so please be patient while i get familiar. I have recently acquired a 2000 silver convertible C5. I bought the car damaged and I'm currently rebuilding it. My question/problem is that I bought an '02 front clip to go back on the car. Now, I have figured out that my particular car has a separate IAT sensor along with the "three wire" MAF. The new parts I have came with a "five wire" MAF. I did some homework to find out that later models had the IAT sensor built-in to the MAF. Can my particular harness be modified to work with this newer MAF and if so will I need to flash the computer to read it correctly or do I just need to locate the correct MAF and IAT sensor for my year model and be done with it? Also, I plan in the VERY NEAR future to add a twin turbo kit to this car so any input that will speed this process along will be greatly appreciated. Thanks in advance.

Oct 14, 2005 | 05:55 PM

jers98vet

Burning Brakes

Joined: Nov 2004

Posts: 822

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From: Grafton Ohio

You can buy the pigtail adapter from GM and use the newer maf, but you will need to recalibrate the pcm to the larger maf.

If it were me, I'd use the 00 maf and be done with it, especially if you are going with turbos since the 00 maf is metal and the 02 is plastic.

Jer.

Oct 14, 2005 | 06:13 PM

2kvert

Thread Starter

Burning Brakes

Joined: Oct 2005

Posts: 1,020

Likes: 18

From: Anderson SC

Thanks for the advice. I kinda thought that's what I should do but I wanted some input from someone else.

Oct 14, 2005 | 06:39 PM

6Speeder

Safety Car

Joined: May 2000

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From: Albuquerque NM

I say use the newer MAF. With twin turbos you will need all the air you cn get, bigger MAF is better. Also, you will be re-tuning the PMC for the turbos anyway, easy to do the MAF tables at the same time.

Oct 14, 2005 | 08:32 PM

Greg_E

Melting Slicks

Joined: Jun 2002

Posts: 2,246

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From: Middletown CT

Quote:

Originally Posted by 6Speeder

The adapter harness is around $40. If you don't already have it, you will also need the air bridge that fits the larger MAF.

Oct 15, 2005 | 04:45 PM

2kvert

Thread Starter

Burning Brakes

Joined: Oct 2005

Posts: 1,020

Likes: 18

From: Anderson SC

I appreciate it guys. That helps me a lot. When I bought the parts to repair my car, I soon realized they had come from a newer model than mine. The front clip also came with a manual radiator instead of an automatic so I have to locate one of those too. It came withe the five wire MAF, air bridge, and a "modified" air filter housing....(a section cut out of the top of it). I hope to have the rest of my parts tomorrow so iI can get this thing on the road in about a week. Just being curious, but does anybody have an "approximate" real-world hosepower figure for an average cat-back system? This car came with a system on it but I'm not sure what brand it is. If my car came with 345 hp, I was wondering about what it's rating would be close to now. Thanks again guys.

Oct 15, 2005 | 06:05 PM

6Speeder

Safety Car

Joined: May 2000

Posts: 4,808

Likes: 344

From: Albuquerque NM

Cat back systems don't net you much extra horsepower, less than 10 HP. The stock system flows well enough for a stock engine. Aftermarket is for bling and sound.

Oct 16, 2005 | 12:56 AM

dfe1

Advanced

Joined: Feb 2003

Posts: 65

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From: Confusion

If you're planning on installing twin turbos, you'll need to tune and if you need to tune, you'll need software. With EFILive's FlashScan custom operating systems you can convert to speed density, reprogram for a 2-bar of 3-bar MAP sensor and eliminate the MAF altogether. Go to www.efilive.com for more details. I converted my '01 to speed density and it works great.