M2 ECU or Peter Farrell Powertrain Mgnt Sys
#1
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M2 ECU or Peter Farrell Powertrain Mgnt Sys
I have the choice of getting either of these at the same price (used). In your opinion, which one of the 2 are more reliable, and has a more consistant power curve, (smoothness when the power hits)?
Thanks
Thanks
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Originally posted by PVerdieck
Neither, save up and get a PowerFC, instead of something that will be a hassle if you ever do more.
Neither, save up and get a PowerFC, instead of something that will be a hassle if you ever do more.
#5
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Originally posted by Saner
Forgot to mention my mods: DP, MP, CB, Intake.
Forgot to mention my mods: DP, MP, CB, Intake.
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Originally posted by jdhuegel1
Do you have a BOOST GAUGE? My guess is you're all over the place with a full exhaust and a boost controller should be your next mod.
Do you have a BOOST GAUGE? My guess is you're all over the place with a full exhaust and a boost controller should be your next mod.
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#8
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Originally posted by dis1
M2 hands down. The PFS unit is better used as a paper weight.
M2 hands down. The PFS unit is better used as a paper weight.
#10
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Originally posted by Saner
Why do you say that? (not meant to sound defensive, just want to know the reason)
Why do you say that? (not meant to sound defensive, just want to know the reason)
You might PM a member by the name of "zullo". He is local to me and has one. He's in the process or trying to do something with it and may be able to give you his impression on the unit.
IMO, I would wait and pick up a used Pettit ECU. M2 does not recommend running a midpipe with their ECU (but people have done it).
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Originally posted by Mahjik
I've heard good and bad things about the EFI/PFS ECU's. I've also seen some people on this forum make good power with them so they can't be a complete waste of money. However, support for them may be the biggest issue.
You might PM a member by the name of "zullo". He is local to me and has one. He's in the process or trying to do something with it and may be able to give you his impression on the unit.
IMO, I would wait and pick up a used Pettit ECU. M2 does not recommend running a midpipe with their ECU (but people have done it).
I've heard good and bad things about the EFI/PFS ECU's. I've also seen some people on this forum make good power with them so they can't be a complete waste of money. However, support for them may be the biggest issue.
You might PM a member by the name of "zullo". He is local to me and has one. He's in the process or trying to do something with it and may be able to give you his impression on the unit.
IMO, I would wait and pick up a used Pettit ECU. M2 does not recommend running a midpipe with their ECU (but people have done it).
#12
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Originally posted by Saner
Why do you say that? (not meant to sound defensive, just want to know the reason)
Why do you say that? (not meant to sound defensive, just want to know the reason)
#13
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I second the option of a used Petit Unit.
Check Petits website.
If you know your fixed mod list, and it won't change, you can just send your ECU to them, and they will update it.
If I had to have a reprogrammed ECU, I would want Petit. None of the others.
1st) The support will be great, and for M2 ordering products, much less getting support, everything blows. Plus they are in questionable condition to say the least.
2nd) There are a number of detractors for PFS.
3rd) A blown engine on a misprogrammed ECU will cost you a lot more than a PowerFC. So if I was going to take that risk, I'd get a Pettit.
Check Petits website.
If you know your fixed mod list, and it won't change, you can just send your ECU to them, and they will update it.
If I had to have a reprogrammed ECU, I would want Petit. None of the others.
1st) The support will be great, and for M2 ordering products, much less getting support, everything blows. Plus they are in questionable condition to say the least.
2nd) There are a number of detractors for PFS.
3rd) A blown engine on a misprogrammed ECU will cost you a lot more than a PowerFC. So if I was going to take that risk, I'd get a Pettit.
Last edited by PVerdieck; 05-25-04 at 10:59 AM.
#14
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PFS
You get the same as an M2 (being able to tune it for 14.5 lbs) and much more.
You have a readout of injector duty cycle, rpm, injector pulse width, O2, boost/vac, data logging capability plus boost controler (for use with a highflow cat), ignition retard/advance. And you have 3 different fuel & ignition maps for 3 different boost settings that you select by keypad or a dial.
So, with the M2 you won't ever be optimal because you will never be able to tune it. With the PFS you can dyno tune the car, which is optimal, with every new mod or lack thereof.
Raj
You get the same as an M2 (being able to tune it for 14.5 lbs) and much more.
You have a readout of injector duty cycle, rpm, injector pulse width, O2, boost/vac, data logging capability plus boost controler (for use with a highflow cat), ignition retard/advance. And you have 3 different fuel & ignition maps for 3 different boost settings that you select by keypad or a dial.
So, with the M2 you won't ever be optimal because you will never be able to tune it. With the PFS you can dyno tune the car, which is optimal, with every new mod or lack thereof.
Raj
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I cannot speak for the PFS PMS, but I have the M2 stage 3 ECU. If you have a midpipe, then FORGET about the M2 ECU. It cannot compensate quickly enough for the boost spikes associated with running a midpipe. BELIEVE ME!
You say you do not have enough money for the Power FC, given your current mods with or without an M2 ECU, you are looking at about $6k all said and done, to replace the motor you are about to blow up.
Your best bet is to get either ECU, dump the midpipe and get a high flow cat. I'm partial to the M2, but will get the Power FC in the future.
You say you do not have enough money for the Power FC, given your current mods with or without an M2 ECU, you are looking at about $6k all said and done, to replace the motor you are about to blow up.
Your best bet is to get either ECU, dump the midpipe and get a high flow cat. I'm partial to the M2, but will get the Power FC in the future.
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Originally posted by overkill
I cannot speak for the PFS PMS, but I have the M2 stage 3 ECU. If you have a midpipe, then FORGET about the M2 ECU. It cannot compensate quickly enough for the boost spikes associated with running a midpipe. BELIEVE ME!
You say you do not have enough money for the Power FC, given your current mods with or without an M2 ECU, you are looking at about $6k all said and done, to replace the motor you are about to blow up.
Your best bet is to get either ECU, dump the midpipe and get a high flow cat. I'm partial to the M2, but will get the Power FC in the future.
I cannot speak for the PFS PMS, but I have the M2 stage 3 ECU. If you have a midpipe, then FORGET about the M2 ECU. It cannot compensate quickly enough for the boost spikes associated with running a midpipe. BELIEVE ME!
You say you do not have enough money for the Power FC, given your current mods with or without an M2 ECU, you are looking at about $6k all said and done, to replace the motor you are about to blow up.
Your best bet is to get either ECU, dump the midpipe and get a high flow cat. I'm partial to the M2, but will get the Power FC in the future.
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Six of us ran the PFS Purple for years. All the bolt ons and ported motors 15 psi of boost. Never blew an engine. It's adjustable and program maps are readily available. The pettit/M2 units are limited to their pre programed chips. We found them to generally suck.
#22
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I also ran a PFS PMC for a while with ported engine and no problems. I had a m2 way back when. It sucks because once you decide to throw on a mid pipe its no longer any good to you since it will run the car lean. I have no idea about the pettit but given the choice of being able to adjust your maps and not being able to adjust I would rather have the ability to make some changes if needed.
Purple box gets my vote. I have one to sell to if anyone is interested. /
Purple box gets my vote. I have one to sell to if anyone is interested. /
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Originally posted by Saner
MP=Engine Death?
MP=Engine Death?
Sounds like people here have had good luck using the PFS and Pettit. I have no experience with them. Sure you could port your wastegate. but by the time you buy an M2 ecu and have pay the labor for having someone pull your turbos off and port the wastegate, you could have bought a brand new Power FC.
#25
I have the PFS box
Advantages
1) tunable - you can make a lot of power
if you know what you're doing
2) adjustable boost control
(something you need with your mods)
3) monitoring - can provide real-time
timing, fuel, boost, and error code
feedback.
Disadvantages
1) tunable - you could easily blow things up
if you don't know what you're doing
2) no support - If you can get
PFS to answer the phone (unlikely),
they will just tell you they don't have
time for RX-7s. And finding anyone who
has ever tuned one is difficult.
3) quirks of oem ecu - being a piggy-back,
the idiosyncracies of the stock ecu still
shine through.
Advantages
1) tunable - you can make a lot of power
if you know what you're doing
2) adjustable boost control
(something you need with your mods)
3) monitoring - can provide real-time
timing, fuel, boost, and error code
feedback.
Disadvantages
1) tunable - you could easily blow things up
if you don't know what you're doing
2) no support - If you can get
PFS to answer the phone (unlikely),
they will just tell you they don't have
time for RX-7s. And finding anyone who
has ever tuned one is difficult.
3) quirks of oem ecu - being a piggy-back,
the idiosyncracies of the stock ecu still
shine through.