I dyno'd my MP3 with out knock!

[70]

Well, today I went to a local shop and dyno'd the ol' MP3 turbo. I got 156 hp and 177 torque to the wheels. No knock over 5000 rpm, like what happened previously at FP. I attribute that in part to the 93.5 octane @ $1.59/gallon I've run for two tanks now.

Down side, I was at 14.1 A/F ratio on that run. A couple of runs and it was the same numbers. We tried adjusting the AFPR a little to help run a little richer. Powerdropped slightly as the A/F got richer. We pulled something like 151 hp at 13.5 A/F.

So, once I get home I'll post the scanned dyno of the top run, and probably most important as it had the worst A/F ratio.

 

[PaulMP3]

sweet!

is that with the mp3 or p5 ecu.. I think i remember reading you only got knock with the mp3 ecu..

thank god i have 94 here... that is all i have ran since boosted. i pay around 1.90 for 94

 

[igdrasil]

nice!!!

nice torque there too...

anyway, you should have tried my trick

 

[LinuxRacr]

sweet!

is that with the mp3 or p5 ecu.. I think i remember reading you only got knock with the mp3 ecu..

thank god i have 94 here... that is all i have ran since boosted. i pay around 1.90 for 94

Damn, I have paid that for 93 octane on occasion. 93 is as good as it gets here. I run 8 PSI, and my A/F ratio is around 11 and below above 5000 RPM at times. Fuel pressure = 98+ at 8 PSI. I need to get that tuned.

 

[Kooldino]

nice!!!

nice torque there too...

anyway, you should have tried my trick

What trick?

 

[shinzen]

Hey man, where'd you go to get the dyno done? How pricey etc..

 

[mp5smuggler]

damn thats a good price for gas. i was at the station the other day and it was 1.74 for 84 oct.!!!!

 

[igdrasil]

What trick?

disconect the air intake temp sensor...it will run a little bit more rich. In my case, I recalibrated my FMU from12:1 to 8:1, now it runs lean aroun 13:1 but with the AIT sensor unplugged, it will run close to 12:1

 

[70]

sweet!

is that with the mp3 or p5 ecu.. I think i remember reading you only got knock with the mp3 ecu..

thank god i have 94 here... that is all i have ran since boosted. i pay around 1.90 for 94

This is with the MP3 ECU in the car. No knock with 93.5 octane. I have never changed and never will change my ECU from the MP3 one.

 

[70]

Hey man, where'd you go to get the dyno done? How pricey etc..

I went to MAC Autosport down in Parker. It's not that far away from ym house.

It cost $55 for as many runs as we could get in one half hour with a little tuning involved. But I think they were giving me a little bit of a deal becuase I had them do some work for me on something else un-related.

 

[70]

Ok, so I'm confused about what's going on with the pictures, so I'll try to attach it I guess.

So, here is the dyno with the A/F along the bottom.


***EDIT***
Sorry, for the cuddy quality. Crappy scanner!
***END EDIT***

 

[acidbug]

Those are some good numbers! I know how hard it was to tune w/ those RRFPR! I found myself all over the place...And costantly having to adjust it!

Chas

 

[mazdamp3_18]

what psi were you running?

do you have an intercooler... if so what are the dimensions?

chris

 

[Chojin]

StuttersC -

Good job dude. However, your AFR is waaay too lean for a boosted car, especially a MP3 with its advanced timing. Do you have the Pierburg Aux. Inline Fuel Pump yet? If not, get it and adjust the adjust the RRFPR so that a 12:1 AFR is achieved from 3K to redline. Once you do this, your power will increase and you'll be safer too, trust me.

-Shawn

 

[70]

what psi were you running?

do you have an intercooler... if so what are the dimensions?

chris

It's the Flyin' Protege turbo and is stated in the first post.

 

[70]

StuttersC -

Good job dude. However, your AFR is waaay too lean for a boosted car, especially a MP3 with its advanced timing. Do you have the Pierburg Aux. Inline Fuel Pump yet? If not, get it and adjust the adjust the RRFPR so that a 12:1 AFR is achieved from 3K to redline. Once you do this, your power will increase and you'll be safer too, trust me.

-Shawn

I know I'm lean in that run. Before I left we got it down 13.5 A/F, but I had to go to class.

I can adjust it further when I get time. I'm not on boost that often.

 

[mp5jeff]

how much boost were you running on the dyno runs?

 

[70]

how much boost were you running on the dyno runs?

~5.5 psi...The same amount for the past 16000 miles with out incident.