rynberg

Just about every other one on the market, including the PFC (sort of).

jdhuegel1

Ok... You guys are scaring me... Should I be upgrading?

the_glass_man

iTrader: (2)

I tend to ask myself, What would Jesus do???

ptrhahn

iTrader: (9)

My PFC boost control is solid as a rock in all conditions. I've got a ported motor and sequential twins... but still a hiflo cat in place.

As far as PMC prices glassman, i'm pretty sure you can get one free if you open a new checking account. I sold mine used for a lousy 500 bucks.

vosko

iTrader: (4)

i'm running the blitz sbc-id. it holds boost at 10psi or even 20psi on my T78 , it may be expensive but you get what you pay for

LUV94RX7

iTrader: (3)

I'm using a Profec B. High and Low settings. Currently 15psi and 20psi. Works fine.

Ken

RTS3GEN

In response to the question, what caused the engine failures...? BOTH, had the pms-absolutely nothing was touched on the keypad, matter of fact the first one blew up and the toggle switch was on the 10psi setting and the keypad was off the computer. The engine wasn't exactly fresh but 47,000 miles isn't exactly what I call tired either. And I am sure if in the careful hands of Peter himself it can be tuned for even better power, but when I'd call back in 97 when I got my car, just getting him to answer any of my questions thru John on the phone was like squeezing blood from a turnip. I had PFS springs and intake as well as a couple other odds and ends. I have since dissassociated my car completely due to his lack of customer service. And before the flames start flying, I am sure he has helped plenty of people, but when I'd call other shops(ie RP or Pettit) I'd always at least get a question answered....
Art

RTS3GEN

Rikki,
Relax dude, I don't think it's the fact that you have to "defend" your products, it's the shitty support that Peter "offered" to anyone outside a 4 1/2 mile radius of his shop. Out here in BFE Kansas, there are no tuning shops and fewer techs that knew anything about this car 5-6 years ago, so those of us on the scene had to fend for ourselves. Some of us survived and learned but others didn't. Had Peter been able to help out my 2 friends with the software/hardware as opposed to telling them to send him the unit each time there was a problem and then only to charge 250 F'in dollars to "upgrade" the software(read put new sticker on the case). He could have easily talked them through the mapping or explained a couple of things to them to help get the maps right. I'm sure the **** works, but the support absolutely sucked and may still suck. Being backed by the guy gives you unlimited(perhaps) access to the tuning and help, but for the average enthusiast this isn't possible/feasable. I can understand your frustration, it's normal to get defensive when you have a system that works well. I get that way as well when people say the stock turbos blow up or melt down after a week or so above 12psi. Not so I say, mine have 128,000 miles and going strong, min boost setting on my profec B set at 12.8 and countless quarter mile passes at 14psi plus. Take it in stride, but don't get defensive, you must admit that Peter could use a course in customer service(or at least he needed it a couple years ago).
Art

yzf-r1

iTrader: (1)

I'm using a Profec B. High and Low settings. Currently 15psi and 20psi. Works fine

so the profec can dial your boost down automatically on a sudden cold night?

the PFC requires manually increasing the wastegate control solenoid opening frequency I believe, so that is not "smart", just convenient, realtive to a manual boost controller

a manual boost controller served me well for 4 years until I got a little too overconfident with the setting on a sudden cold night

artguy

btw...if i only had an 8x8 tunable map Id upgrade. yer playin with fire if you have more than just base mods.

Im sure its great if you have a catback or minimal mods but after all Ive been thru with my seven there is no way in hell I am trusting my cars fuel to outdated and minimal eqpt.

my pfc sucks for boost control...its whacked...I picked up a 3 bar profec b and it works great.

the datalogit is the oooooonly reason to stick with the pfc....if it were not for that amazing program I would not have been able to tune my car and I would have gone with a motec. the motec makes the pfc look like a childs toy...the pfc makes the pfs look like a childs toy...so that should put things in perspective.

you can use a program (i think it was excel) to turn your fuel maps into graphs...and adjust them as fuel curves as well to be sure that they are nice and smooth in transition from point to point. looking at them that way..as graphs with points to pull..made me aware how few 20x20 pts of resolution really is. if i only had five pts to pull in boost my FUEL CURVE WOULD NOT LOOK LIKE A CURVE AT ALL...it would look like a hexagon. you need many points to make a curve ya know.

on a positive note...tuning the pfs unit is quick since you only gotta change a few numbers. then ya just let the enterpolater "roulette" take its course.


j

yzf-r1

iTrader: (1)

you can use a program (i think it was excel) to turn your fuel maps into graphs...and adjust them as fuel curves as well to be sure that they are nice and smooth in transition from point to point. looking at them that way..as graphs with points to pull..made me aware how few 20x20 pts of resolution really is. if i only had five pts to pull in boost my FUEL CURVE WOULD NOT LOOK LIKE A CURVE AT ALL...it would look like a hexagon. you need many points to make a curve ya know

it's not a car....it's a religion

I'll stick with my POS Pettit computer, thank you very much, you can spend countless hours and dollars on your car

artguy

yeah...i made a very expensive cake...but there is no way in hell Im gonna lay a big dirty turd on top.

if i had very few mods I would be happy with an ecu like the pettit or pfs....i was happy with a reprogrammed gforce back in the day. ... but then i went nuts with the upgrades.

I dont want to spend anymore money...part of doing a great ecu is about NOT spending more money after that....a properly tuned ecu will save you thousands right? heheheh

the pfc and the datalogit makes tuning EXTREMELY easy. I had never tuned a car before and now my car is tuned for 11s all the way thru..a bit richer up top...and lean at vacuum. just like it is supposed to be...it took two turns with xs and one with kdr for me to realize that if i wanted it done right I would have to do it myself. so it did become studious at the end.


anyhow...


j

Dragon

the power FC boost kit comes with a 3 bar map sensor to replace the stock one. then you take the small harness the plugs in to the side of the coputer and hook up the stock MAP sensor to it. It then uses that stock sensor to look at ambiant air pressure and adjusts acordingly so you program will be dead on at all altitudes and weather conditions...

rxrotary2_7

comes standard with haltech... i am not arguing what is better. this is a data log from a member in the haltech section. i cant figure out how to post mine.

ptrhahn

iTrader: (9)

Doesn't a haltech require all new wiring, and sensors and such though?

Thats too much for me, i want plug and play.

rxrotary2_7

i dont. nice to have sensors that you can pick up at ANY autoparts store. and cheaper. plus no more old ugly brittle stock engine harness.

plus, if your car was going to be down for the winter...you can buy a new harness for like $120 and use the e6k in your snowmobile.

jdhuegel1

Now THAT'S just bad ***!

tcb100

I would like to offer my $.02 here on the PFS PMS. IT WORKS. I have had it since 1996 and I did the rom upgrade. I like the three programs. I passed Maryland clean air dyno testing. I ran a number of 12.1s on making a solid 17 lbs for most of 3rd & 4th & I have every expectation of hitting the 11s as soon as the weather permits and I repeat, I am not clean air challenged.

By the way, Doug at EFI told me that it is a 16 bit processor. The fuel & ignition matrices are 13 x 5 & my stock computer runs all other functions as Mazda intended. The interacq software provides datalogging with time, rmp, boost, water temp, air temp, input & output timing, pulse width, fuel %, o2, throttle position. Is there something missing here that a tuner can't live without?

My car is street legal with a high flow cat and is just about an 11 second car. If I stay stock sequential and high flow cat, exactly how much time would I knock off the quarter from fancy schmancy bigger bucks new stuff? I don't see many rx-7s with my gear doing any better than I do, regardless of computer, so it can't be a big deal.

You guys are way too harsh. If I ever go single it will be with a tec3 but until then my PMS works just fine. If they are available for $500 they are one hell of a deal.

tcb100

And by the way again, the fuel cut problem is totally solved by relocating the knock sensor. And by the way once more, the software upgrade is more than "putting a sticker on" it and if you don't believe that talk to Doug at EFI. This is a very tough crowd!

fitzrx7

iTrader: (1)

I recently did 354rwhp at 13psi on the stock twins with a mild streetport and all the bolt ons(it looks almost just like rikki's except no secret sauce :P ). It did 334rwhp at 10psi!! I use a PFC though. And on Wednesday I'll have the 11sec timeslip if all goes well.

And that's on a set of 50k miles turbos that are blowing oil bad (free extra apex seal lubrication)!

I must say the timing maps I got rock, thanks Chuck!

11.5 AFR's all the way across, and it wasn't a very cool day 40C AIT, it prob makes a good few more ponies moving on a cooler day.

Can I join the "Cool guys running stock twins and making 350rwhp 11sec club" Rikki??...pleaassee (j/k)

Jon
'93 SSM base
Orlando

fitzrx7

iTrader: (1)

duplicate

SPOautos

That's the old school club, the cool club is twins making 400+....and no, you cant join yet



Later,
STEPHEN

fitzrx7

iTrader: (1)

ON STOCK TWINS??? AT 13 PSI??

Last time I checked you needed about $2000 on fancy snazy super dooper modified twins to get an extra 60hp at 17psi!! Sorry, $2000 for 60HP, no thanks. For that much $$$ you can make alot more power.

What's the best RWHP with -STOCK- twins, bone stock, like mine, spewing oil in all their glory. Mine even have one bent compressor blade! There's a few HP right there for you bean counters.

I'll get my dyno sheet scanned in a few days so nobody cries.

Jon
'93 SSM base
-STOCK- turbos

rxrotary2_7

https://www.rx7club.com/forum/showth...hreadid=152307

here is a good 402 w/ a stock motor and stock twins.