bort617

There are a lot of ecu's to choose from, and I have limited it to the apexi power fc or the pettit reprogrammed ecu, and i need your help. I have downpipe, catless midpipe, apexi gt spec catback, apexi intake, unorthodox pulley set, and front mount intercooler. SRmotorsports claims to have a pre-dyno tested power fc. Would this be a better option then buying a base power fc and dynoing it? I am on a budget but if the power fc is what i need then i will pay the extra money.

actionhank

And does anyone have any thing to say about the AEM?

spurvo

Before the mods throw this to the ECU section, really, does anyone have anything to say about the AEM?

Mahjik

iTrader: (1)

No. Pre-tuning the PFC is worthless. You'll need to have it tuned on a dyno when you have all your stuff installed (if you care about your car). If you aren't going to dyno tune the PFC, you are basically getting an expensive pre-programmed ECU like the M2/Pettit (only leaner in stock form).

Here's a good thread about a similar topic:

https://www.rx7club.com/forum/showth...hreadid=116858

It really depends on the goal of your car. Think about what you want to do with the car, that will let you know what ECU you should purchase.

spurvo

creepy thought here, but what if you just wanted essentially stock performance, just without the fuel cut at 3K, the INSANE amounts of fuel at cold startup (don't even wanna THINK about how much my DP glows during that period!), and air/fuel ratios that more closely match the car's real conditions via A/F sensor that actually does something (broadband). Add on top of that sensors that give real data (do those even exist? I mean, does the ECU's thermosensor REALLY tell it what temp the intake is at, or just that it's above 147F and we can stop dumping fuel in and screwing up the idle with the ISC, breaking the motor mounts, and so on...)? I guess I'd just like the control, but don't necessarily need all kinds of extra power...

(/Control freak wasting bandwidth)

edit: or I could just go READ the link you posted Majik. Do the Pettit types (remapped/nonadjustable) pass emissions? Can I search. Should I be banned?

Mahjik

iTrader: (1)

I can't see why a M2/Pettit wouldn't make the car pass emissions. Each state is different though. Does your state actually do an emissions test, or just visually check for a catalytic converter?

I would imagine that as long as you warm up the car so the cat is at it's best (and all your other emission parts are functioning properly), it shouldn't matter but don't quote me on that.

XLR8

iTrader: (52)

Haltech E6k for ultimate tunability. Quite pricey and alot of work to install and tune. But the possibilities are endless with this setup.

Good luck

Air-Rex

Dam, I was hoping to here something about the AEM. hint,hint.

Mahjik

iTrader: (1)

There is an AEM ECU forum:

https://www.rx7club.com/forum/forumd...?s=&forumid=81

Hint, hint...

rx7machine

If I got the PFC with only a few mods, would the ECU be good enugh for my car forever? As long as I have it tuned (at a dyno) every time I upgrade my mods.. wouldn't this be the best bet?

Mahjik

iTrader: (1)

The PFC base maps are leaner than the stock ECU, so you need it tuned from the beginning.

Sure, any programmable ECU is "the best bet" *IF* you get it tuned when you get it and keep it tuned as you modify car.

However, for some people, that too much of a hassle or they don't have access to dyno tuning.

rx7machine

Yea.. as londg as I find a dyno around where I live..