RX7SIGN

2 Questions:

I am purchasing the Power FC this week and hopefully tunning it this weekend. I am curious what kind of power you can make with intake (apexi), exhuast & downpipe (hks), straight pipe and the Power FC properly tuned.

Second question: Anybody have any objections on purchasing a Power FC from rx7store.net, I have heard from others about them and dealt with bad customer service myself. But I am curious on others suggestions. Some may see nothing wrong with ordering it from them considering all it has to do is arrive at my house lol. They do have the cheapest price with commander.

VegasFD

The Power FC comes with a basemap for intake, downpipe, and exhaust. So if those are your only mods, there shouldn't be too much tuning involved. As for the power gains, I'll let someone else chime in on that.
Second, I've never personally had a problem with Jason, or RX7Store's customer service. However, I do know that Power FC's have been on backorder there for a while, but Jason said they should arrive this week. Good luck.

RX7SIGN

Thanks, how bout the first question now?? Anybody

21K95RX7

well since you have a straight pipe, it pretty much all depends on how out of control your boost is going to get (put the cat back on) unless you have a ported wastegate. do a search for wargasm. he has an awesome database of people's dyno runs. do you have a boost gauge? please say you do. im basing my modest guess on that you have a strong engine, and the swami sez............................................... .............drum roll.............................................. ........................................255-265rwhp with 10-8-10

Tim Benton

iTrader: (1)

All depends on the amount of boost you run with those modifications. No intercooler yet?

Tim

21K95RX7

oh and i got my pfc from rx7.com about the same price, and i believe gotham has it for cheap too. good guys by the way at both places.

ptrhahn

iTrader: (9)

The PFC won't "make" power per se... it'll just allow you to tune to get the most power (safely) out of the mods you have.

Intake's usually worth 10-15... catback 10, DP 20, MP 15. You'll probably see 250@ the wheels at 10-12 psi.

astrozombie1138

I made 252 at the wheels with just a cat back and a SMIC swap.

turbodrx7

iTrader: (43)

The Power FC is not really a mod for power as much as for realiability. It allows you to run more boost which gives you more power, but the realiability if gives you is the main the benefit.

I can not even describe the difference when i switched from a pettit ecu to a power fc. The car felt like a different car and was so much more smooth under acceleration and a lot more controlled it seemed. It just ran better.

I will agree with others that have posted that you will probably see right around the 250-260 rwhp range.
Good luck,
Austin

gbomb91

iTrader: (1)

I would be interested in hearing a report on what you get. As many have stated, the PFC doesn't really produce hp but rather allow the car to be tuned properly with the mods you have to get optimum power gains. with that said I did:

267rwhp @ 11 psi and 284rwhp @ 14 psi in my tuning session. I had at the time apexi intake, greddy exhaust, and downpipe from rx7store. I will be adding a high flow cat and fuel pump and have already installed greddy smic so will be retuning soon. would like to hear back on your results.

ps- this probably isn't a good site to bash rx7store since Jason runs it and in my experience those guys have done nothing but good things for their customers, this forum and 7 owners in general, but thats just my opinion. never had any problems with them.

rynberg

Right. You can manipulate a dyno to show whatever you want.

RX7SIGN

Thanks guys, Ray of PF will be tunning my car. I have been known to run "quicker" than what my mods support so we will see the turnout. I hope to post a very fast time for nearly stock 7 in the 1/4 mile for my minimal mods (stock ic). If Ray says I will be okay with straight pipe I will do it if not probably high flow cat. I dont have an intercooler yet so boost will be stock. Now for the FC it can be considered a power mod it allows you to utilize the mods to its fullest potential, reliability doesnt hurt. Tunning is very essential, go to Japan and see some 7's with nearly less than half of what we put on our cars and make more power.


For those that dont know my mods:

Defi Boost Guage
Apexi Intake
HKS Exhuast & Downpipe
Reliability Mods
According to Ray:
New motor with rougly 17,000 on it.

astrozombie1138

I didn't manipulate the dyno at all. It is a nice power band and everything. It has no spikes in it what so ever.

rynberg

I didn't say you did. The shop owner may have settings wrong -- accidentally or on purpose. The fact is you don't make 252 rwhp with just a catback and larger SMIC.

astrozombie1138

What would the shop owner have to gain out of setting the dyno to high? Also, they just had a dyno day about 2 days before I went, the dyno should have been tuned pretty well.

rynberg

What does a dyno day have to do with anything? Like I said, the settings could be wrong accidentally -- or on purpose. A shop owner might do it on purpose to make people feel better about their cars.....

You can debate the reasoning all you want but you aren't going to get 252 rwhp with just a catback and SMIC.

adictd2b00st

rynberg is right, there is variables and corrections that you can change on a dyno. most often they aren't "wrong" on purpose. basically most every dyno is gonna be different, the real purpose of a dyno imho is to show what you've GAINED, that part wont lie. go to another dyno shop and see what u put down on their dyno. it'll most likely be a different number. but i assume you never dyno'd the car stock, so that would be kinda hard to find out at this point.

RX7SIGN

Please guys lets not get off the thread topic. Everybody has a different car with different mods and will make different power on a dyno.

21K95RX7

im piggy backing on what rynberg said earlier, about shop owners. maybe the settings are wrong but most likely he wants you to think he's some tuning guru and in turn you will point your friends to him saying he was able to extract 252 rwhp out of just smic and catback. so my brother that is what the shop owner has to gain from screwing with the numbers.

SammyD

Wow, this thread is a little dissapointing! I basically just dropped 2k+ on 'Stage One' parts. Power FC, downpipe, intake, high-flow cat, rb exhaust, upgraded fuel pump. I was under the impression that this would all give me about 300 rwhp. now I'm thinking that I'm realistically lucky to get a 40 rwhp gain to a total of about 250rwhp, especially if I keep that 10-8-10 boost levels (which I intend to).

I'm sure my tuner could fanagle things to get me close to 300 hp, but I really don't want to jeapordize reliability to much. Should I tell him to give me a safe tune to 250-260? I'm in CA so 91 ocatane is all we have.

rynberg

You won't even be close to 300 rwhp at 10 psi with those mods, nor should you expect to be. I think 250-260 would be optimistic on 91 octane with a SAFE tune. The real power in these cars comes from raising the boost.

To make 300 rwhp at 10 psi on a safe 91 octane tune, you will need a midpipe and probably a streetported motor -- I made 308 rwhp at 10 psi with the mods in my sig.

tphan

Used Power FC are sold here ranging $650 - $750. I dont see why buy new at $1k price...unless money is not an object.

As for tuning and hp gain...I am leaving that to the pro (Steve Kan) 2/11/06. I am curious about hp so will post asap...keeping 12 psi boost tho...hoping for 300 rwhp, but will settle for 275.

Mods: Apexi intakes, HKS DP, Greddy SMIC, RB dual tip, PFC.

RX7SIGN

I havnt found any used. Ryndberg I noticed you have upgraded your seals to 3mm your not supporting 800hp im not sure the significance in doing this. RE Amiemya himself says all 3rd gen rx7's seals are good enough for 500hp, its all about tunning.

Montego

iTrader: (1)

New power FC with a commander can be found new for $750.


http://www.jappartsspecialist.com/main.htm

rynberg

I used to be a 2mm seal fan until my engine builder convinced me otherwise....please read my comments about the issue in my engine rebuild thread:

https://www.rx7club.com/showpost.php...5&postcount=68
https://www.rx7club.com/showpost.php...8&postcount=77
https://www.rx7club.com/showpost.php...14&postcount=9
https://www.rx7club.com/showpost.php...&postcount=156