PowerFC vs Nistune? - Page 3 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Tensor187x · 06-12-2009, 10:31 AM

Quote:

Originally Posted by aa87

Throw that megan Fpr in the trash.

I'll sell it to a little ignorant kid such as yourself.

*ROIDMONKEY* · 06-12-2009, 12:03 PM

i dont know but i cant recall of a member here making over 500 using a PFC ! anyone ? with a sr20

*Dousan_PG* · 06-12-2009, 12:51 PM

i cant thnk of anyone too
but most people making over 500 hp wont cheap out on parts/tuning either, which is why they (imo) arent going pfc as well
haha

imo pfc is entry level shit
but it works great for id say 90% of people's setups
shit i am about 370wheel and thats a lot for what i do.

water · 06-12-2009, 02:52 PM

PFC is definitely the tinker toy of the EMS world. You can't really knock it too hard IMO since it is old as dirt, plug and play, and still pretty damn effective when the application makes sense (not shooting for the stars). As far as the context of this thread should be concerned, PFC has more potential than the NISTUNE, is tried and tested, and a lot more money if purchased new. I still think ROM tunes are the way most people should be going but if you can find a nice deal on a PFC or if you're just into playing with shit, the PFC and NISTUNE are both good options.

handinpants · 06-24-2009, 12:37 PM

Steve, what store sells a power fc for 825? And even if you get a djetro for 900 like I did, you still have to get the map sensor, and intake temp sensor, harnesses and good luck finding them apexi's been backordered since I bought mine.
So for a d jetro you are looking at about 1200 out the door, then we have to spend another 600 to have it tuned.

I'm getting nistune tuned by Chris Jensen of dc performance.
He's really good tuning 100k+ viper porsche and Mercedes, good guy, great prices, best price I have seen compared to some other tuners on here,
His nistune prices will take your business

Quote:

Originally Posted by steve shadows

Power FC can be had new for as little at 825 bucks from most site now

and D Jetro can be had for about 915 bucks

Npth units are great

and the only apexi ever did right IMO (lol)

Tomei Rytehc is also a good unit which does not get enough creidt

but the new Haltech is indeed amazing, I will surely be using them on my next project car (probably slated for 2011) after I pick up another Nissan.

rsibley22 · 11-03-2009, 11:12 AM

dam sooo much info, super helpful

*K_style* · 11-03-2009, 11:59 AM

Quote:

Originally Posted by rsibley22

dam sooo much info, super helpful

yep yep

i got my self PFC my self last week.. just need to finish my car and
take it to get tuned !!

*johngriff* · 11-03-2009, 12:21 PM

Kind of old thread.

What I was going to add, was someone's comment about "If you are going over 700+hp get a pfc".

That in itself is wrong.

The PFC is limited by the AFM it can accept, which is think is the Z32. So I think you are limited at a little less than 500hp. Steve or someone else more familiar with AFM tuning can probably correct me on that.

As far as the megasquirt goes:
I do NOT like the way it reads the Nissan CAS. It is a really cheap way of getting a low res ecu to read a high accuracy device.

Basically, any nissan cas puts out two signals, Home and Trigger

Home only pulses 4 times per full engine rotation, these 4 pulses are in time with the TDC positions of the 4 cylinders (4cyl example)

Trigger pulses for every degree of cam timing.

Native Nissan Optical reading (stock ecu and other) read the home window (verify cylinder) then count off the trigger teeth to know when to fire ignition and when to open injectors.

This process is a little too complicated for the AEM / Autronic / Motec so they all use a low-res replacement wheel in Nissan/Toyota/Mitsu optical cas (they are all the same 55mm wheel).

The Megasquirt really takes the sorry way out and only reads the home window signal, 4 tdc positions, with NO data inbetween. This WILL produce Fule/IGN delivery errors! The Timing Algo probably is something like (h# x {rate of accel} \ delivery) basically reading the home signal, determining the velocity of acceleration of the engine, then dividing back time to deliver off the map.

No no no, I would rather use the low res wheel than the way megasquirt is set up to read.

CA18/16 cas is "essentially" the same as the RB. So any problems you see with other ecu compatibility with RB, you will run into with the CA. (there are lots).

SR_Vlurs · 11-03-2009, 09:31 PM

the pfc d jetro use a 3 bar map sensor so that would eliminate the use of the z32 afm correct

*johngriff* · 11-03-2009, 09:58 PM

djetro is just a pita though, if you read through reviews earlier in the thread.

06-12-2009, 12:03 PM	#62
ROIDMONKEY Premium Member Join Date: Jul 2007 Location: HollyFLORIDA Posts: 1,841 Trader Rating: (3) Rides Gallery: ROIDMONKEY	i dont know but i cant recall of a member here making over 500 using a PFC ! anyone ? with a sr20 __________________ TRUE thing: True ////OFFSET\\\\ is acheived without spacers Running on E85 522whp.......GT3076R

06-12-2009, 12:51 PM	#63
Dousan_PG Pink GodziRa Join Date: May 2002 Location: Orange County, California Age: 30 Posts: 16,322 Trader Rating: (10) Rides Gallery: Dousan_PG	i cant thnk of anyone too but most people making over 500 hp wont cheap out on parts/tuning either, which is why they (imo) arent going pfc as well haha imo pfc is entry level shit but it works great for id say 90% of people's setups shit i am about 370wheel and thats a lot for what i do. __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

11-03-2009, 11:12 AM	#66
rsibley22 Leaky Injector Join Date: May 2008 Location: Riverside, Cali Age: 20 Posts: 82 Trader Rating: (1)	dam sooo much info, super helpful __________________

11-03-2009, 12:21 PM	#68
johngriff @RPSport.net! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,042 Trader Rating: (4) Rides Gallery: johngriff	Kind of old thread. What I was going to add, was someone's comment about "If you are going over 700+hp get a pfc". That in itself is wrong. The PFC is limited by the AFM it can accept, which is think is the Z32. So I think you are limited at a little less than 500hp. Steve or someone else more familiar with AFM tuning can probably correct me on that. As far as the megasquirt goes: I do NOT like the way it reads the Nissan CAS. It is a really cheap way of getting a low res ecu to read a high accuracy device. Basically, any nissan cas puts out two signals, Home and Trigger Home only pulses 4 times per full engine rotation, these 4 pulses are in time with the TDC positions of the 4 cylinders (4cyl example) Trigger pulses for every degree of cam timing. Native Nissan Optical reading (stock ecu and other) read the home window (verify cylinder) then count off the trigger teeth to know when to fire ignition and when to open injectors. This process is a little too complicated for the AEM / Autronic / Motec so they all use a low-res replacement wheel in Nissan/Toyota/Mitsu optical cas (they are all the same 55mm wheel). The Megasquirt really takes the sorry way out and only reads the home window signal, 4 tdc positions, with NO data inbetween. This WILL produce Fule/IGN delivery errors! The Timing Algo probably is something like (h# x {rate of accel} \ delivery) basically reading the home signal, determining the velocity of acceleration of the engine, then dividing back time to deliver off the map. No no no, I would rather use the low res wheel than the way megasquirt is set up to read. CA18/16 cas is "essentially" the same as the RB. So any problems you see with other ecu compatibility with RB, you will run into with the CA. (there are lots). __________________ RPSport 949.891.1710 RPSport's New Products for the S13 and SR20! Join our Haltech Group Buy! John@RPSport.net

11-03-2009, 09:31 PM	#69
SR_Vlurs Zilvia Member Join Date: Mar 2008 Location: in the worse place in the world ..... Posts: 228 Trader Rating: (2)	the pfc d jetro use a 3 bar map sensor so that would eliminate the use of the z32 afm correct __________________ ¿$phinx?

06-12-2009, 02:52 PM	#64
water Zilvia Junkie Join Date: Nov 2003 Location: FL Age: 30 Posts: 367 Trader Rating: (0)	PFC is definitely the tinker toy of the EMS world. You can't really knock it too hard IMO since it is old as dirt, plug and play, and still pretty damn effective when the application makes sense (not shooting for the stars). As far as the context of this thread should be concerned, PFC has more potential than the NISTUNE, is tried and tested, and a lot more money if purchased new. I still think ROM tunes are the way most people should be going but if you can find a nice deal on a PFC or if you're just into playing with shit, the PFC and NISTUNE are both good options.

11-03-2009, 09:58 PM	#70
johngriff @RPSport.net! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,042 Trader Rating: (4) Rides Gallery: johngriff	djetro is just a pita though, if you read through reviews earlier in the thread. __________________ RPSport 949.891.1710 RPSport's New Products for the S13 and SR20! Join our Haltech Group Buy! John@RPSport.net

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