MAP sensor replacement - Removing manifold necessary?
Thread Starter
Racer
Joined: Aug 2003
Posts: 304
Likes: 2
From: North Vancouver BC
MAP sensor replacement - Removing manifold necessary?
Hi folks,
Planning on installing a 2-bar sensor and was wondering if my LS1 intake manifold must be removed to accomplish this? Is it bolted to the manifold in any way?
I tried doing a search but found only links describing manifold swaps which I am not planning to do at this time.
Thanks!
Planning on installing a 2-bar sensor and was wondering if my LS1 intake manifold must be removed to accomplish this? Is it bolted to the manifold in any way?
I tried doing a search but found only links describing manifold swaps which I am not planning to do at this time.
Thanks!
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Originally Posted by Drako
Hi folks,
Planning on installing a 2-bar sensor and was wondering if my LS1 intake manifold must be removed to accomplish this? Is it bolted to the manifold in any way?
I tried doing a search but found only links describing manifold swaps which I am not planning to do at this time.
Thanks!
Planning on installing a 2-bar sensor and was wondering if my LS1 intake manifold must be removed to accomplish this? Is it bolted to the manifold in any way?
I tried doing a search but found only links describing manifold swaps which I am not planning to do at this time.
Thanks!
Answer to the title - yes
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I second that answer!!! 
You need to remove the manifold. DO NOT get caught in the trap of just sliding it forward enough to access it. If you could see all the sand and dirt that is under that manifold, you would PUKE!!! Remove the manifold, clean the sand and dirt out, change out the MAP and make very sure that you put the little vacuum line on securely so it doesn't fall off.
BC
You need to remove the manifold. DO NOT get caught in the trap of just sliding it forward enough to access it. If you could see all the sand and dirt that is under that manifold, you would PUKE!!! Remove the manifold, clean the sand and dirt out, change out the MAP and make very sure that you put the little vacuum line on securely so it doesn't fall off.BC
Intermediate
Joined: Oct 2005
Posts: 46
Likes: 0
Sorry to get off topic here but this just got me thinking...
I thought the map was just to initially read the barometric pressure?
I have never seen a fuel table for a MAF car - but I had imagined a 2-D map with RPM on an axis and a MAF value? So, is the map value just used outside the fuel table as some kind of modifier?
Jeez... I am just finishing my Procharger install and am looking for a good close place for a tune - guess I better figure out if I need to change my Map also...
Or could you be converting to MAP only?
I guess I am too used to MAP only cars bear with me here...
Thanks for any input...
I thought the map was just to initially read the barometric pressure?
I have never seen a fuel table for a MAF car - but I had imagined a 2-D map with RPM on an axis and a MAF value? So, is the map value just used outside the fuel table as some kind of modifier?
Jeez... I am just finishing my Procharger install and am looking for a good close place for a tune - guess I better figure out if I need to change my Map also...
Or could you be converting to MAP only?
I guess I am too used to MAP only cars bear with me here...
Thanks for any input...
Thread Starter
Racer
Joined: Aug 2003
Posts: 304
Likes: 2
From: North Vancouver BC
I plan on running on a MAP sensor-only (Speed Density) tune with a Vortech kit by using EFILive tuning software. Before you run out and go the 2 or 3-bar route, you can in fact tune the car with with a blower using the stock 1-bar sensor. A good tuner will be able to help you do this. However, a 2-bar sensor will give you better control of fueling and ignition timing above 105 KPa so its definitely the prefered route.
have fun with you procharger
have fun with you procharger
Last edited by Drako; Feb 22, 2006 at 06:59 PM.
