944 n/a supercharger set up help!
#1
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
i have plans to install an M90 eaton supercharger in my 83' 944. My main questions is what should be done about the ECU? standalone? Wolf EMS? Microsquirt?
i dont plan to run high boost, until the transaxle gets swapped and a few other things are done, ive pocked around the forums here and seen a lot of different set ups, im not a guru with the engine management stuff so all help is appreciated
i dont plan to run high boost, until the transaxle gets swapped and a few other things are done, ive pocked around the forums here and seen a lot of different set ups, im not a guru with the engine management stuff so all help is appreciated
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
#2
Rainman
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
you can tune the stock dme with some additional software/hardware. very easy to do and understand.
search these boards for username "Rogue_Ant", hes the one who unlocked this all. i have done the tuning successfully and am doing the M90 thing as well, although for higher boost on an NA engine.
search these boards for username "Rogue_Ant", hes the one who unlocked this all. i have done the tuning successfully and am doing the M90 thing as well, although for higher boost on an NA engine.
#3
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
you can tune the stock dme with some additional software/hardware. very easy to do and understand.
search these boards for username "Rogue_Ant", hes the one who unlocked this all. i have done the tuning successfully and am doing the M90 thing as well, although for higher boost on an NA engine.
search these boards for username "Rogue_Ant", hes the one who unlocked this all. i have done the tuning successfully and am doing the M90 thing as well, although for higher boost on an NA engine.
just out of curiosity how much has your M90 set up run you $?
and how abouts did you mount everything up? my AC is removed so i have a lot of space and ive seen a few other 944's with the M90 in it
#4
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I got a used M90 from a junkyard for $200.
I left the DME alone, and wired in an MSD-6-BTM ignition which allows you to retard the timing of the motor, on top of the usual multi-spark discharge and also interchangeable rev-limiter like most MSD units.
I used 951/S2 green-top injectors, and a boost/vac controlled rising-rate adjustable FPR to change air/fuel ratios.. just remember to use a good wideband to monitor.
And that's really about it. The bracket for the blower, and the intercooler piping and some other misc small pieces were all custom made. I put a stock 951 intercooler in the front.
Pretty simple setup.
Good luck and please ask if you have more questions..![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
I left the DME alone, and wired in an MSD-6-BTM ignition which allows you to retard the timing of the motor, on top of the usual multi-spark discharge and also interchangeable rev-limiter like most MSD units.
I used 951/S2 green-top injectors, and a boost/vac controlled rising-rate adjustable FPR to change air/fuel ratios.. just remember to use a good wideband to monitor.
And that's really about it. The bracket for the blower, and the intercooler piping and some other misc small pieces were all custom made. I put a stock 951 intercooler in the front.
Pretty simple setup.
Good luck and please ask if you have more questions..
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![](http://i43.photobucket.com/albums/e355/bmx944/my%20944/101_1371copy.jpg)
#6
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Thanks! And no, I actually blew it up first. ![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
During my tuning stages I was messing a lot with the fuel pressure and timing adjustments, and suddenly the car started running real bad, and smoke was steadily pumping from under the hood.
At the time I was using a smaller Ford Racing pulley, and also a much larger crank pulley modified from a GMC truck. So it was pushing 13psi into the motor as soon as you put your foot on the pedal, even right from idle. And this is all on a stock, old worn out motor to begin with.
Long story short, I did a compression test, and one cylinder was super low. I think I killed the rings in this cylinder because my crankcase vent smokes like exhaust as soon as you fire the car up, and it runs like its dropped one cylinder.
Anyhow, I picked up a set of 951 internals, which are lower compression and have forged rods, so this should help significantly.
When you mess with fire you're likely to get burned!!
![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
During my tuning stages I was messing a lot with the fuel pressure and timing adjustments, and suddenly the car started running real bad, and smoke was steadily pumping from under the hood.
At the time I was using a smaller Ford Racing pulley, and also a much larger crank pulley modified from a GMC truck. So it was pushing 13psi into the motor as soon as you put your foot on the pedal, even right from idle. And this is all on a stock, old worn out motor to begin with.
Long story short, I did a compression test, and one cylinder was super low. I think I killed the rings in this cylinder because my crankcase vent smokes like exhaust as soon as you fire the car up, and it runs like its dropped one cylinder.
Anyhow, I picked up a set of 951 internals, which are lower compression and have forged rods, so this should help significantly.
When you mess with fire you're likely to get burned!!
![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
![manual](https://rennlist.com/forums/graemlins/rtfm.gif)
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Trending Topics
#8
Rennlist Member
#9
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I got a used M90 from a junkyard for $200.
I left the DME alone, and wired in an MSD-6-BTM ignition which allows you to retard the timing of the motor, on top of the usual multi-spark discharge and also interchangeable rev-limiter like most MSD units.
I used 951/S2 green-top injectors, and a boost/vac controlled rising-rate adjustable FPR to change air/fuel ratios.. just remember to use a good wideband to monitor.
And that's really about it. The bracket for the blower, and the intercooler piping and some other misc small pieces were all custom made. I put a stock 951 intercooler in the front.
Pretty simple setup.
Good luck and please ask if you have more questions..![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![](http://i43.photobucket.com/albums/e355/bmx944/my%20944/101_1371copy.jpg)
I left the DME alone, and wired in an MSD-6-BTM ignition which allows you to retard the timing of the motor, on top of the usual multi-spark discharge and also interchangeable rev-limiter like most MSD units.
I used 951/S2 green-top injectors, and a boost/vac controlled rising-rate adjustable FPR to change air/fuel ratios.. just remember to use a good wideband to monitor.
And that's really about it. The bracket for the blower, and the intercooler piping and some other misc small pieces were all custom made. I put a stock 951 intercooler in the front.
Pretty simple setup.
Good luck and please ask if you have more questions..
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![](http://i43.photobucket.com/albums/e355/bmx944/my%20944/101_1371copy.jpg)
two questions though!
1. which wideband AFM kit did you use?
2. where do i get the pulley that attaches to the crankshaft and the belt that will work for this application?
#10
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
We used the AEM UEGO wideband kit, which comes with the sensor and gauge and all the wiring. It's universal which is nice.
For the crank pulley we found a GMC crank pulley that had the same amount of ribs, and cut the center out of it and welded it over the stock 944 crank pulley. So the outer diameter has been increased. As for the belt... just use the old string method to measure an approximate length, and then just buy one that is the right length and ribs! We also used a small Mazda idler pulley with a slotted hole as the belt tensioner.
For the crank pulley we found a GMC crank pulley that had the same amount of ribs, and cut the center out of it and welded it over the stock 944 crank pulley. So the outer diameter has been increased. As for the belt... just use the old string method to measure an approximate length, and then just buy one that is the right length and ribs! We also used a small Mazda idler pulley with a slotted hole as the belt tensioner.
#11
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
We used the AEM UEGO wideband kit, which comes with the sensor and gauge and all the wiring. It's universal which is nice.
For the crank pulley we found a GMC crank pulley that had the same amount of ribs, and cut the center out of it and welded it over the stock 944 crank pulley. So the outer diameter has been increased. As for the belt... just use the old string method to measure an approximate length, and then just buy one that is the right length and ribs! We also used a small Mazda idler pulley with a slotted hole as the belt tensioner.
For the crank pulley we found a GMC crank pulley that had the same amount of ribs, and cut the center out of it and welded it over the stock 944 crank pulley. So the outer diameter has been increased. As for the belt... just use the old string method to measure an approximate length, and then just buy one that is the right length and ribs! We also used a small Mazda idler pulley with a slotted hole as the belt tensioner.
![manual](https://rennlist.com/forums/graemlins/rtfm.gif)
#12
Addict
Rennlist Member
Rennlist
Small Business Partner
Rennlist Member
Rennlist
Small Business Partner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Tuning in...
The stock NA engine pistons will not like anything over 15psi, and really you should keep boost to 12psi or less (especially on pump fuel).
Knock is extremely important - and will kill any motor quickly. So tune it correctly - I would look into a J&S Safeguard for added knock protection & tuning information.
The DIY tuning would be a pretty good solution for your proposed setup, much more tunable then a Rising-Rate FPR and BTM.
-Rogue
The stock NA engine pistons will not like anything over 15psi, and really you should keep boost to 12psi or less (especially on pump fuel).
Knock is extremely important - and will kill any motor quickly. So tune it correctly - I would look into a J&S Safeguard for added knock protection & tuning information.
The DIY tuning would be a pretty good solution for your proposed setup, much more tunable then a Rising-Rate FPR and BTM.
-Rogue
#14
Rennlist Member
Join Date: Jul 2001
Location: Brisbane, Australia (Formerly: Sunnyvale, CA)
Posts: 2,120
Likes: 0
Received 3 Likes
on
3 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Do your lights still retract? It looks like the air filter might be getting in the way in that pic.
Also, did you have to move your alternator to make room?
Also, did you have to move your alternator to make room?
Last edited by Mark944na86; 12-03-2010 at 12:24 PM. Reason: typos
#15
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Tuning in...
The stock NA engine pistons will not like anything over 15psi, and really you should keep boost to 12psi or less (especially on pump fuel).
Knock is extremely important - and will kill any motor quickly. So tune it correctly - I would look into a J&S Safeguard for added knock protection & tuning information.
The DIY tuning would be a pretty good solution for your proposed setup, much more tunable then a Rising-Rate FPR and BTM.
-Rogue
The stock NA engine pistons will not like anything over 15psi, and really you should keep boost to 12psi or less (especially on pump fuel).
Knock is extremely important - and will kill any motor quickly. So tune it correctly - I would look into a J&S Safeguard for added knock protection & tuning information.
The DIY tuning would be a pretty good solution for your proposed setup, much more tunable then a Rising-Rate FPR and BTM.
-Rogue
my 44 is an 83' so it does not have a chip, would i have to swap with a DME off a later year car or go the FRwilks route by having one installed?