Who here actually blows through the MAF??

[Super Matty P]

yeah, I was thinking that the spark cut might be part of the MSP ecu program and not on the regular protege's.

 

[Captain KRM P5]

If the P5 ecu was never "taught" to see boost, does it act the same as a MSP when hitting the 5v's? I imagine it has to do something to protect itself and more than likely throws a code, but does it actually do the same thing?

when i took off the Flyin Miata voltage clamp and went into boost the p5 ecu threw a code "manifold absolute pressure sensor voltage too high" indicating it saw boost and was....confused....by it. obviously that aspect of the program would have to be different

 

[Dexter]

ugh, fuel cut + spark = lean.

fuel cut does not make sense to me.

 

[BlkZoomZoom]

with no fuel no combustion occurs, therefore no lean condition.

 

[Super Matty P]

thats an argument for a different thread.......

Ken, if your error was "manifold absolute pressure sensor voltage too high" that is a problem using the stock MAP sensor which we don't. It shouldn't have anything to do with the MAF.

 

[Captain KRM P5]

thats an argument for a different thread.......

Ken, if your error was "manifold absolute pressure sensor voltage too high" that is a problem using the stock MAP sensor which we don't. It shouldn't have anything to do with the MAF.

i'm not so much saying it does - i was just noting one of the differences between the two ECUs piggybacking off BlkZoomZoom's post. I actually do use the stock map sensor and have been meaning to ask you how you have yours wired up with the haltech...

why again were you mounting the MAF inline? for ease of install, routing pipes? i know you told me but i cannot recall the exact reason

 

[Super Matty P]

I disconnected my cruise control line and plugged it directly into the Haltech MAP. I then spliced a T-connector into a libe coming off the IM and ran it over to the cruise.

 

[Captain KRM P5]

I disconnected my cruise control line and plugged it directly into the Haltech MAP. I then spliced a T-connector into a libe coming off the IM and ran it over to the cruise.

what did you do about the stock MAP i meant

 

[Super Matty P]

nothing, it's disconnected

 

[Dexter]

with no fuel no combustion occurs, therefore no lean condition.

what about the remaining fuel in the cylinder?

 

[Captain KRM P5]

nothing, it's disconnected

the wires and the tubing both?

 

[Super Matty P]

nope, just the vaccuum line...i left the sensor plugged in.

 

[CustomMSP]

Take a look at my dyno graph comparing various things with one of them being the Maf on both sides of the system.

 

[Rism]

!!STUPID QUESTION ALERT!!

I know what MAF stands for but what does MAP stand for.

 

[Kooldino]

what about the MSP's hittin spark cut at 10-11psi.....is that 225+whp?? I couldn't imagine it making that much power running as slow as they are....as slow as mine was.

Well, I did say "~220+whp" not "225+whp".

But yeah, a properly tuned MSP at 11psi (with supporting mods) should make around 220whp.

 

[Kooldino]

what about the MSP's hittin spark cut at 10-11psi.....is that 225+whp?? I couldn't imagine it making that much power running as slow as they are....as slow as mine was.

One more thing...you have to remember that the MSP ECU != Protege 5 ECU. So it may be programmed slightly differently in terms of reacting to the MAF.

 

[Kooldino]

when i took off the Flyin Miata voltage clamp and went into boost the p5 ecu threw a code "manifold absolute pressure sensor voltage too high" indicating it saw boost and was....confused....by it. obviously that aspect of the program would have to be different

...so the FM voltage clam clamps the signal the ECU sees from the MAP sensor as well???

 

[Captain KRM P5]

...so the FM voltage clam clamps the signal the ECU sees from the MAP sensor as well???

thats just the thing, i didn't * think * it did. matters got worse when we connected the MAP sensor the way juan asked us to

!!STUPID QUESTION ALERT!!

I know what MAF stands for but what does MAP stand for.

manifold absolute pressure

 

[Kooldino]

thats just the thing, i didn't * think * it did. matters got worse when we connected the MAP sensor the way juan asked us to

So did you wire it back in?

So the final anwer is (circle one)?

The FM clamp clamps MAP voltage

The FM clamp does not clamp MAP voltage

 

[Captain KRM P5]

So did you wire it back in?

So the final anwer is (circle one)?

The FM clamp clamps MAP voltage

The FM clamp does not clamp MAP voltage

does not clamp MAP voltage. I believe the code was thrown, looking back on things now, because at the same time of removal we wired/hosed the MAP per juan's directions and that turned out not to work