MFA Boost Check Says 9434 at Idle?

[BlackHeartValentine 0]

I did the correct proceedure of the MFA 2 hold switch off then on then release the end button...the MFA then said 9434. What does that mean? I drove it while reading it and it didn't fluctuate...I did it again the other day got the same number but it did fluctuate. I guess my question is "Is 9434 Bad or Good?"

[markp 0]

I don't think you have done it correctly. I think you have to push the button again after the engine is started to get to correct reading. It should be around 400 at idle.

 

Just copied this out of the WIKI.....

 

 

Start Motor

 

 

Move the MFA selector to "2"

 

 

Press and hold the MFA end button (keep holding)

 

 

Stop motor

 

 

Start Motor

 

 

Release the MFA end button.

 

 

Press the MFA End button one time.

 

 

 

For UK cars, you should now see 450-470 (warm engine) fluctuating with idle.

 

 

Go run your car!!! 3rd and 4th gear to REDLINE. Carefully note the highest #'s you've got.

 

 

A pullied charger should not make less than 11.6psi, and even so, thats weak. A Stock charger should make ~~11psi in perfect shape!

 

 

USA EURO Hg(#'s of boost/vacuum) Comments

15 200 -23.7

55 400 -17.8

90 600 -11.9

127 800 -5.9

148 1000 0 (Atmosphere- ala no boost, charger is bypassed)

172 1200 2.9 psi (Your charger is dead or big boost leak)

192 1400 5.8 psi (Your charger is about dead or big boost leak)

211 1600 8.7 psi (Your charger needs new apex strips or big boost leak)

228 1800 11.6 psi (Great for stock pulley, Probably needs new apex strips if 68mm pulley)

242 2000 14.5 psi (Great for 68mm pulley on stock charger)

255 2200 17.4 psi (Great for 68mm pulley on heavily ported charger, hold on to your ass fast!!)

 

255 and up folks need to be careful with fueling, as the programming maps end at about 242 on the ecu Dynotuning, and air/fuel/egt gauge, and custom chip recommended

[Supercharged 2]

9434 sounds like atmosphere, like the hose has come off...

 

Mine reads 520 at idle...

[BlackHeartValentine 0]

I don't think you have done it correctly. I think you have to push the button again after the engine is started to get to correct reading. It should be around 400 at idle.

 

Okay, I pushed the end button once after letting go and walla! it said 35 and fluctuated when I rev'd it up...I took it on the highway and massed the gas then the reading jumped to 171 and wouldn't go higher than that. My MPG says 99.9 (way off) So I guess my new question is does 171 mean I have a Boost Leak??

 

(Also, the engine sounds like its missing or the timing is retarded...I put a timiing light on it and if you are standing on the passenger side looking down at the belt, the mark would be to the left of straight up, pretty much pointing at the firewall or where the glovebox is on the inside)

[markp 0]

Something doesn't sound right with those boost readings. I think for american cars it should be reading around 60 on idle and a max reading of 171 definately indicates a problem. Check for boost leaks, I think there is a how to in the wiki....

 

http://the-corrado.net/.archive/forum/viewtopic. ... boost+leak