Specs on Petit Unlimited ECU?
01-25-05, 07:50 PM
#27
Originally Posted by Fatman0203
Someone ran a 350 with an M2 ECU, and porting. I think the M2's timing is what makes the difference in power, plus it runs a tad richer, at least looking at the AFR numbers of a few Ive seen.
01-27-05, 02:45 PM
#31
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BTW the seller said it is, but is the ECU tuned for idle with no airpump, cause right now my idle is pig rich with no airpump and stock ecu.
01-27-05, 05:15 PM
#33
www.silverbulletrx7.com
Originally Posted by Mr rx-7 tt
We dynoed 363 rwhp on the PFS with a supra pump and stock injectors. This car and others ran like this for YEARS.
I have the Pettit and it is great. I heard that the M2s are tuned for the lower octain fuel out there.
As for PFS everybody knows they suck. Yes they can be tuned but they cause so many problems so often. They don't call them purple peter motor eaters for nothing. Yes, many cars run well with the PFS computers but many others don't. You never hear this complaint with Pettit, M2 or PFCs. So lets keep this on topic to answer the question that was originally asked because nobody interested in this thread will give a crap about what PFS has.
01-28-05, 04:54 PM
#35
Originally Posted by Fatman0203
Ok guys got the ECU, so any special break in required? Does the car have to adapt or w/e??
Originally Posted by Fatman0203
2nd, is the idle tuned for no airpump?
01-28-05, 06:49 PM
#36
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Originally Posted by dis1
I have the Pettit and it is great. I heard that the M2s are tuned for the lower octain fuel out there.
As for PFS everybody knows they suck. Yes they can be tuned but they cause so many problems so often. They don't call them purple peter motor eaters for nothing. Yes, many cars run well with the PFS computers but many others don't. You never hear this complaint with Pettit, M2 or PFCs. So lets keep this on topic to answer the question that was originally asked because nobody interested in this thread will give a crap about what PFS has.
As for PFS everybody knows they suck. Yes they can be tuned but they cause so many problems so often. They don't call them purple peter motor eaters for nothing. Yes, many cars run well with the PFS computers but many others don't. You never hear this complaint with Pettit, M2 or PFCs. So lets keep this on topic to answer the question that was originally asked because nobody interested in this thread will give a crap about what PFS has.
Pettit? Not only did I hear complaints we had two motors grenade with the "Pettit" unlimited ECU. Both units were replaced with PFS purples with the latest software and tuned. The cars ran for years at 15 psi on PUMP gas and never had any problems. 15 psi on pump with a pettit?
Maps are also readily available for the PFS Purple. If you want to purchase a non programable chip, have at it. I was pointing the guy to another alternative so lose the attitude.
Last edited by Mr rx-7 tt; 01-28-05 at 06:53 PM.
01-28-05, 07:47 PM
#37
www.silverbulletrx7.com
Originally Posted by Mr rx-7 tt
No they don't "suck". They called them purple motor eaters because they were just about the only thing on the market for a while. The software was upgraded over time and they are very reliable.
Pettit? Not only did I hear complaints we had two motors grenade with the "Pettit" unlimited ECU. Both units were replaced with PFS purples with the latest software and tuned. The cars ran for years at 15 psi on PUMP gas and never had any problems. 15 psi on pump with a pettit? Maps are also readily available for the PFS Purple. If you want to purchase a non programable chip, have at it. I was pointing the guy to another alternative so lose the attitude.
Pettit? Not only did I hear complaints we had two motors grenade with the "Pettit" unlimited ECU. Both units were replaced with PFS purples with the latest software and tuned. The cars ran for years at 15 psi on PUMP gas and never had any problems. 15 psi on pump with a pettit?
Maps are also readily available for the PFS Purple. If you want to purchase a non programable chip, have at it. I was pointing the guy to another alternative so lose the attitude.And yes, I know you were just trying to point out other options but you did so twice and I am sure everybody here knows that the PFS unit is an option. It doesn't really need discussed, nor does the PFC. It irks me when I see threads asking questions regarding one product and somebody always has to say, "Why not get this instead? It is so much better." Well it really isn't needed and normally just forces the original poster to defend their reasoning before good answers and discussion starts.
dis1
01-28-05, 09:23 PM
#38
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I was in the market for a Pettit and eventually got an M2:stage3... and then an RX7.com ecu later on.
I am happy with the M2, my goals were only 300rwhp though and I think I am close to that so I felt no need for more, especially since I want SEMI-RELIABLE power. Maybe in the future I'll get a PFC but for now I am happy. I am porting my wastegate soon and plan to run 12psi on the M2 ECU with a midpipe -- I hope that this is without a doubt safe to do... I know there was much talk about if spike/creep were the only concerns with a MP and not only CFM's being too much for the tune at specific points.
I tried the RX7.com ECU but due to my disregaurd for the fuel filter I lost my engine
I plan to sell the ECU soon but it was varified good for a MP and 14.7psi from RX7.com themselves. I was just stupid
I would agree with others here -- for big power above 300rwhp go Pettit or even better PFC
~Kris
I am happy with the M2, my goals were only 300rwhp though and I think I am close to that so I felt no need for more, especially since I want SEMI-RELIABLE power. Maybe in the future I'll get a PFC but for now I am happy. I am porting my wastegate soon and plan to run 12psi on the M2 ECU with a midpipe -- I hope that this is without a doubt safe to do... I know there was much talk about if spike/creep were the only concerns with a MP and not only CFM's being too much for the tune at specific points.
I tried the RX7.com ECU but due to my disregaurd for the fuel filter I lost my engine
I plan to sell the ECU soon but it was varified good for a MP and 14.7psi from RX7.com themselves. I was just stupid I would agree with others here -- for big power above 300rwhp go Pettit or even better PFC
~Kris
01-28-05, 11:12 PM
#39
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Originally Posted by dis1
Yea, 15 psi on a pettit is asking for it. The biggest disadvantage to Pettit is that you can't upgrade to 1300 cc injectors. (They tell me they are working on an upgrade.) This limits the safe levels to about 300 at the wheels in my opinion.
Originally Posted by dis1
As for the PFS units most people had more problems with the later software compared with the earlier versions. I saw so many examples that it isn't even funny.
Originally Posted by dis1
I think if you want programmable there are much better options.
Originally Posted by dis1
If you want good maps on a chip you can't go wrong with Pettit unless you try to push the limits too far.
Originally Posted by dis1
And yes, I know you were just trying to point out other options but you did so twice and I am sure everybody here knows that the PFS unit is an option. It doesn't really need discussed, nor does the PFC. It irks me when I see threads asking questions regarding one product and somebody always has to say, "Why not get this instead? It is so much better." Well it really isn't needed and normally just forces the original poster to defend their reasoning before good answers and discussion starts.
dis1
dis1
01-29-05, 10:32 AM
#40
www.silverbulletrx7.com
I think we will just agree to disagree. If somebody reading this thread wants to learn more about various owners problems or luck with the PFS unit I am sure there are plenty of threads regarding this on the forum. Just do a search. A quick search came up with these two threads. The first is PFS vs Pettit and M2. (Note the topic of the thread and right away somebody starts in with, "get a PFC.") The second is one of the most common problem with the PFS unit. I have also seen a lot of harness issues.
https://www.rx7club.com/forum/showth...hlight=pfs+pms
https://www.rx7club.com/forum/showth...hlight=pfs+pms
dis1
https://www.rx7club.com/forum/showth...hlight=pfs+pms
https://www.rx7club.com/forum/showth...hlight=pfs+pms
dis1
01-29-05, 04:27 PM
#41
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Well so far the car feels strong running open wastegate, what sucks is no boost until 6k but once I get the boost controller on there should be around 4k and hold 12 psi. I'll do a dyno.
01-29-05, 06:58 PM
#42
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Smackdown
Originally Posted by dis1
I have the Pettit and it is great. I heard that the M2s are tuned for the lower octain fuel out there.
As for PFS everybody knows they suck. Yes they can be tuned but they cause so many problems so often. They don't call them purple peter motor eaters for nothing. Yes, many cars run well with the PFS computers but many others don't. You never hear this complaint with Pettit, M2 or PFCs. So lets keep this on topic to answer the question that was originally asked because nobody interested in this thread will give a crap about what PFS has.
As for PFS everybody knows they suck. Yes they can be tuned but they cause so many problems so often. They don't call them purple peter motor eaters for nothing. Yes, many cars run well with the PFS computers but many others don't. You never hear this complaint with Pettit, M2 or PFCs. So lets keep this on topic to answer the question that was originally asked because nobody interested in this thread will give a crap about what PFS has.
..LOL- Chris- you're getting slapped around here...
LOLactually the reason why they called them the peter purple motor eaters is when they came out they had too many parameters for people (ie: -retards) to mess with. Everyone decided that since they can change fuel and timing....they would and voila- blown rotary. The PFS computer works quite well for full throttle power. As for part throttle- it's about as good as stock but nothing compared to the PFC.
Now Compared with the rotary retards of today who not only can't afford the car but are too young to read....well, thats a different story.. LOL- just kidding.
By the way, nice webpage silverbullett seven.
John
01-30-05, 09:32 AM
#43
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Originally Posted by JaNusSolSumnus
I was in the market for a Pettit and eventually got an M2:stage3... and then an RX7.com ecu later on.
I am happy with the M2, my goals were only 300rwhp though and I think I am close to that so I felt no need for more, especially since I want SEMI-RELIABLE power. Maybe in the future I'll get a PFC but for now I am happy. I am porting my wastegate soon and plan to run 12psi on the M2 ECU with a midpipe -- I hope that this is without a doubt safe to do... I know there was much talk about if spike/creep were the only concerns with a MP and not only CFM's being too much for the tune at specific points.
I am happy with the M2, my goals were only 300rwhp though and I think I am close to that so I felt no need for more, especially since I want SEMI-RELIABLE power. Maybe in the future I'll get a PFC but for now I am happy. I am porting my wastegate soon and plan to run 12psi on the M2 ECU with a midpipe -- I hope that this is without a doubt safe to do... I know there was much talk about if spike/creep were the only concerns with a MP and not only CFM's being too much for the tune at specific points.
