93-97 99-02 454mag where is 98?

Reply Subscribe

Thread Tools

02-06-2011 | 04:18 PM

#11

STV_Keith

Registered

Joined: Jul 2003

Posts: 70

Likes: 1

From: Palm City, FL

Quote:

Originally Posted by Young Performance

It will only read up to 100 Kpa. It does not recognize anything over that. It will still think it's 100 Kpa. The Mefi 1 doesn't have any boost tables, so there is no way to tune in boost or run a 2 bar map sensor. That is why Merc used the Mefi 3 on the 575 SCI. Of course, we use a Mefi 4 now. It's a much better piece than the 3.
Eddie

Ahh, that's sweet. So if the stock ECM basically flatlines at 100kPa, then you could use a second MAP sensor to read/tune for boost. Sounds easy enough. Thanks for the info Eddie!

02-16-2011 | 06:51 AM

#12

prostock3

Thread Starter

Registered

Joined: Sep 2010

Posts: 340

Likes: 1

From: Lake St Clair, Mi

found some paper work since i dont have the boat infront of me is this a serial number 0L035518

02-16-2011 | 08:13 AM

#13

28Eliminator

Registered

Joined: Dec 2001

Posts: 809

Likes: 0

From: Rapid City SD

Yep, thats it. And this site says it is a 1998.
http://www.mercruiserparts.com/mercruiser_parts.asp

02-16-2011 | 03:26 PM

#14

prostock3

Thread Starter

Registered

Joined: Sep 2010

Posts: 340

Likes: 1

From: Lake St Clair, Mi

so where would the computer be at so i know what computer i have?

02-16-2011 | 03:36 PM

#15

28Eliminator

Registered

Joined: Dec 2001

Posts: 809

Likes: 0

From: Rapid City SD

It should be on the port side near the back of the motor. Mine is mounted inside a box mounted to the side of the exhaust riser, with a lid that opens.