BP questions

[nos92mx3]

Yes i have migrated from the b6 to the bp side.
I bought smoke's mx3 and am currently going thru it.
A few questions

What are the factory bp injectors rated at (cc wise) also a part number would help.
What is the bp ecu's rev limit. I could have sworn ive seen the tach go to 7800 more than once. Though the stock tach can probably be off isnt the revlimit 7400?

[Mi|<E]

BP is between 230 and 240 cc stock injectors, there is some debate on this.

part number is: #195500-2180 for the tan top.
and they are listed at 265cc on the denso site so go figure.

The blue top mx-3 injectors are 230 cc

bp ecu rev limit is 7200 rpm


Here is a good read on injectors:

http://www.miataturbo.net/forum/t4288/

[nos92mx3]

I figured they would be between 230-240 and i do have the tan top injectors installed.
For some reason this thing idles pig rich, were talking 11-1, so i played around with the maf and now we are idleing at a nice 15-1.

I originally thought that the intank walbro was overpowering the stock fpr, so i swapped it out with an adjustable one, no change.
Any chance the factory ecu has been modified? for fuel and or rev limit? I didnt think we could mod our ecu's.

Its a bp with a gtx intake manifold with an intake, and exhaust.
Nothing spectacular, but when i averaged 20 mpg i was a bit leery.

[Mi|<E]

Im not sure what your running, if it is what you have in your
sig or not, but leaning out past 14 isnt a good idea.

The BP26 Ecu cant be easily or readily modded on its own so
assume for now its stock.

So your using a BP26 ecu with the tan top injectors and no turbo?
This would be why its running so rich. If there is no turbo in your
setup grab a BP09 / BP10 ecu.

list more details for me

[nos92mx3]

whoops i need to change my sig.

That was my old mx3 i recently got a new one.

The new one is a bp with gtx intake manifold, with an intake and exhaust.
Ive got it running nice now i just had to do some tuning.
turns out it was also running 0* ignition advance , so i bumped that up to 12* and all is well.

[Limegreen mx-3]

whoops i need to change my sig.

That was my old mx3 i recently got a new one.

The new one is a bp with gtx intake manifold, with an intake and exhaust.
Ive got it running nice now i just had to do some tuning.
turns out it was also running 0* ignition advance , so i bumped that up to 12* and all is well.

U mean tune up.

[nos92mx3]

no, tuning.
I had to adjust the vaf, fuel pressure and timing accordingly.

[Limegreen mx-3]

no, tuning.
I had to adjust the vaf, fuel pressure and timing accordingly.

OK