ECU recommendations??? What's your opinion??
08-19-01 | 01:13 PM
#1
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From: CONCORD, OHIO
ECU recommendations??? What's your opinion??
I've got all PFS upgrades on newly purchased FD: Intercooler, cold air induction, SS Catback, turbo gauge. Should I stick with PFS for the ECU or is their a better model out there. I'm not a auto technoid so I'm probably looking for the simplest/best unit to improve performance without too much stuff for me to screw up. Thanks for your comments guys.
08-19-01 | 02:35 PM
#2
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From: Columbus, Ohio
Get either the Pettit unlimited or an Apexi' Power FC....stay away from the others if you plan to do a lot of mods. I made the mistake of getting an M2 ECU, not that it's a bad ECU, it' just that it won't handle a midpipe, streetport.....etc. I would sy if you're going to do mod as far as a single turbo, go with the Power FC, it can handle secondary injectors and all sorts of stuf....as for me, I'm at the end of the line with my ECU and I've only had it 2 months.....
08-19-01 | 02:43 PM
#3
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From: Oceanside, California
If you with Peter farrel's computer, you can often find used ones on www.thepartstrader.com sometimes as low as $500
08-19-01 | 02:49 PM
#4
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Get the Power FC. For now it is the best system out there. Tuned ECU used to be the only option out there but now i would recommend away from them unless you have your car dynotuned for it.
The problem is that no rx-7 is exactly alike. There are many factors that can cause one 7 to need diffrent timming and fuel compared to another 7 that has the exact same mods.
An ECU is just a guesstimate to what you "should" have. You basically tell them what you have on the car and the guess that you will need X fuel and X timing.
At least with a Power FC you can somewhat tune it to "your" car.
There is no true substitution to dyno tuning but then again not everyone has access to that. Even thought the Commnader for the Power FC will only let you access 1/2 the tuning parameteres at least it is better than none at all.
The problem is that no rx-7 is exactly alike. There are many factors that can cause one 7 to need diffrent timming and fuel compared to another 7 that has the exact same mods.
An ECU is just a guesstimate to what you "should" have. You basically tell them what you have on the car and the guess that you will need X fuel and X timing.
At least with a Power FC you can somewhat tune it to "your" car.
There is no true substitution to dyno tuning but then again not everyone has access to that. Even thought the Commnader for the Power FC will only let you access 1/2 the tuning parameteres at least it is better than none at all.
08-19-01 | 03:02 PM
#5
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From: Columbus, Ohio
Yeah, just make sure if you look into a Power FC that you have a dyno shop near you to tune it.....you can get maps that oter people have made, but just like hksFD3s said, not all cars are exactly the same.....
And if you decide to go with a pre-programmed ECU becuase you're not confident in doing it yourself, I still say look into Pettit...
And if you decide to go with a pre-programmed ECU becuase you're not confident in doing it yourself, I still say look into Pettit...
08-19-01 | 03:11 PM
#6
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From: Abingdon, Md
Peter's PMS is a nice unit, but it doesn't work on every RX7 the same. I had it for awhile, but got severe fuel cut. I spoke to Peter on this a few times as well as Dave at KD Rotary and they both said that for some reason or another some RX7 ecu's don't react well to the PMS and experience fuel cut with it.
I have since sold it and bought the Apex Power FC and can honestly say I love it. It gets rid of the 3k stumble entirely and makes the power band much smoother. And its not a piggy back system like the PMS, its a stand alone unit which takes the place of the ecu entirely. In fact, it takes a whole 3min. to hook up, just unplug your stock ecu and plug the Power FC in. Done....
And as mentioned before it can control larger fuel injectors as well as pulse width unlike the PFS PMC.
On a side not the PFS PMC is cheaper and does work very well for what it is and is a good start.
Ernie
I have since sold it and bought the Apex Power FC and can honestly say I love it. It gets rid of the 3k stumble entirely and makes the power band much smoother. And its not a piggy back system like the PMS, its a stand alone unit which takes the place of the ecu entirely. In fact, it takes a whole 3min. to hook up, just unplug your stock ecu and plug the Power FC in. Done....
And as mentioned before it can control larger fuel injectors as well as pulse width unlike the PFS PMC.
On a side not the PFS PMC is cheaper and does work very well for what it is and is a good start.
Ernie
08-19-01 | 03:22 PM
#7
i got the pettit unlimited///great ecu 15psi moded to hell and full rich on a/f...but if u got the $$ go apex pfc...im gonna be sellin my pettit in like 3-4 weeks to go apex...but im also goin single with bigger ingectors..
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08-19-01 | 05:26 PM
#9
Banned. I got OWNED!!!
Joined: Feb 2001
Posts: 2,158
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From: Bay Area, CA
Originally posted by Pressurized
Get either the Pettit unlimited or an Apexi' Power FC....stay away from the others if you plan to do a lot of mods. I made the mistake of getting an M2 ECU, not that it's a bad ECU, it' just that it won't handle a midpipe, streetport.....etc. I would sy if you're going to do mod as far as a single turbo, go with the Power FC, it can handle secondary injectors and all sorts of stuf....as for me, I'm at the end of the line with my ECU and I've only had it 2 months.....
Get either the Pettit unlimited or an Apexi' Power FC....stay away from the others if you plan to do a lot of mods. I made the mistake of getting an M2 ECU, not that it's a bad ECU, it' just that it won't handle a midpipe, streetport.....etc. I would sy if you're going to do mod as far as a single turbo, go with the Power FC, it can handle secondary injectors and all sorts of stuf....as for me, I'm at the end of the line with my ECU and I've only had it 2 months.....
08-19-01 | 10:13 PM
#10
Senior Member
Joined: Feb 2001
Posts: 302
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From: Inwood, Long Island
JoeD,
M2 advises not to use it's ecu with a MP, and especially not with a street port. As for running the Pettit Unlimited with MP and street port, it's possible and I've done it for some time with no side effects. I spoke to Jeff at Pettit and he said the ECU would work great with the MP and should work with the street port(depending on how aggressive). I think that the Pettit ECU is the best for the money, period!! If you have the extra $$ though go with the PFC as you "will" decide to upgrade even more and you'll be able to do so with it!
M2 advises not to use it's ecu with a MP, and especially not with a street port. As for running the Pettit Unlimited with MP and street port, it's possible and I've done it for some time with no side effects. I spoke to Jeff at Pettit and he said the ECU would work great with the MP and should work with the street port(depending on how aggressive). I think that the Pettit ECU is the best for the money, period!! If you have the extra $$ though go with the PFC as you "will" decide to upgrade even more and you'll be able to do so with it!
08-20-01 | 12:19 AM
#12
well b/c haltec costs as much if not more than pfc, is not plug and play..would take better part of a weekend to install...and with his mods he could get just as much hp with less cost and hassle...im not knocking haltec in any way...i even planned on doin it till i weighed the costs out...to get a haltec set up to what i wanted..i could do with the pfc in half the time and get similar results...
xs got 477 out of a single and pfc...dont think id ever need more than that
+pfc runs the omp..haltex either u got to premix or buy mechanical omp=$$
xs got 477 out of a single and pfc...dont think id ever need more than that
+pfc runs the omp..haltex either u got to premix or buy mechanical omp=$$
08-20-01 | 12:49 AM
#13
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From: home of the big chrome wheel homies
Originally posted by Bacon
well b/c haltec costs as much if not more than pfc, is not plug and play..would take better part of a weekend to install...and with his mods he could get just as much hp with less cost and hassle...im not knocking haltec in any way...i even planned on doin it till i weighed the costs out...to get a haltec set up to what i wanted..i could do with the pfc in half the time and get similar results...
xs got 477 out of a single and pfc...dont think id ever need more than that
+pfc runs the omp..haltex either u got to premix or buy mechanical omp=$$
well b/c haltec costs as much if not more than pfc, is not plug and play..would take better part of a weekend to install...and with his mods he could get just as much hp with less cost and hassle...im not knocking haltec in any way...i even planned on doin it till i weighed the costs out...to get a haltec set up to what i wanted..i could do with the pfc in half the time and get similar results...
xs got 477 out of a single and pfc...dont think id ever need more than that
+pfc runs the omp..haltex either u got to premix or buy mechanical omp=$$
08-20-01 | 01:10 AM
#14
Originally posted by Rix7
More often than not the best always costs the most $.
More often than not the best always costs the most $.
...personally ill spend 1500 and go pfc..
had the pettit and ive reached the limits of the stock fuel system
pettit can't acomdate 1600's so i have to go standalone/pfc
but like i said haltec will cost abt equal but then u got to throw in mechanical omp(dont know cost but is over 500 b/c ive seen used ones gor for that)--pfc runs the omp... then unless u install urself u got to pay for that(pfc if it takes u more than 20 min to install ur doing something wrong)
but back to the thread, for his mods and unless hees got plans to go all out..an upgraded ecu or pfc is the logical and economical thing to do...
i dont know abt u but 477 at the wheels is damn good for a streetable car...and if i ever have the bug to go faster...ill have the $$ to go haltec...but id prob end up with a 20b if i need more than 477at the wheels in astreet car...
but spend ur $ how u want...most expensive
08-20-01 | 11:53 AM
#19
sorry its 460.7 my b on a to4s full boost at 3800
heres the thread
https://www.rx7club.com/vforums/show...&threadid=8808
ohh 460.7 is at 16.4psi...nothin 2 crazy i dont think...
heres the thread
https://www.rx7club.com/vforums/show...&threadid=8808
ohh 460.7 is at 16.4psi...nothin 2 crazy i dont think...
08-20-01 | 07:23 PM
#20
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From: sunnyvale, Ca
P-FC
Personally I'd go withthe P-FC. In fact, I did. The existing ECU, and all rechipped versions are 8 bit, the 16 bit P-FC controls better IMHO. The biggest limits withthe P-Fc is it does not support extra injectors or a wide band O2 sensor. So if your planning big HP or need to retune often, then something more than the P-FC is needed. If you have that kind of money, then you could always just throw your P-FC in the garbage just to underline the fact you got bank.
I picked up mine used for $950 w/ shipping. I think it's better than any reprogrammed unit.
Good luck!
I picked up mine used for $950 w/ shipping. I think it's better than any reprogrammed unit.
Good luck!
08-20-01 | 08:38 PM
#21
Passenger
Posts: n/a
Actually one of my friends who works at XS hit 498 to the wheels on a T04s with a street ports 3mm seals and a C-16 pump gas mix.
The car was tuned with a PFC and yes he is running a crazy amount of fuel.
I saw the car hit a 467 on 92 pump gas and that was imoressive as hell. But again this is a XS car....it's alot easier to get big HP numbers when you have the abillity and the tools to mess with your car day in and day out.
It's not like working on someone elses car you can take your time and nit pick on everything.
The car was tuned with a PFC and yes he is running a crazy amount of fuel.
I saw the car hit a 467 on 92 pump gas and that was imoressive as hell. But again this is a XS car....it's alot easier to get big HP numbers when you have the abillity and the tools to mess with your car day in and day out.
It's not like working on someone elses car you can take your time and nit pick on everything.
08-20-01 | 09:06 PM
#22
no
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Posts: 2,295
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From: Dallas, TX / Tokyo, Japan currently
are y'all talkin RWHP or flywheel HP here???
and as far as big power from an 8 bit retuned ecu like the pettit unlimited check out www.rx7s.com ...click on customer cars
youll find...
Anthonys 1993 Rx7. 386 rear wheel horspower. Best quarter mile time of 11.26@119.6 on stock twins and pettit unlimited ecu
i myself have a g-force unlimited ecu.....its a great one, but im thinking of going pfc or haltech.....im having real trouble deciding because of the ups and downs of both.
and as far as big power from an 8 bit retuned ecu like the pettit unlimited check out www.rx7s.com ...click on customer cars
youll find...
Anthonys 1993 Rx7. 386 rear wheel horspower. Best quarter mile time of 11.26@119.6 on stock twins and pettit unlimited ecu
i myself have a g-force unlimited ecu.....its a great one, but im thinking of going pfc or haltech.....im having real trouble deciding because of the ups and downs of both.
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