ttb

hope this helps...

power fc, commander and datalog

the datalog is not the commander. the power FC replaces your stock ECU. optionally you can get a commander that lets your monitor and set various parameters, like boost. the datalog is a computer program that you run on your laptop that connects to the power FC and lets you monitor and set a few extra parameters and lets you chart and stuff.

porting the wastegate

The Wastegate
Most automotive turbochargers have a wastegate, which allows the use of a smaller turbocharger to reduce lag while preventing it from spinning too quickly at high engine speeds. The wastegate is a valve that allows the exhaust to bypass the turbine blades. The wastegate senses the boost pressure. If the pressure gets too high, it could be an indicator that the turbine is spinning too quickly, so the wastegate bypasses some of the exhaust around the turbine blades, allowing the blades to slow down.

ROTORHP

Ya I know what a wastegate does, but I have never heard of "porting a wastegate". Do people hog out a wastegate to flow more? I thought you just install a higher flow one. thanks TomsRx7, I take you up on the pm. Ya your right...don't always get what you want but thats ok.

SleepR1

ttb, thanks for the explanation...I was never clear on that stuff (I'm more into the underpinnings and driving than I am with power production ) So if I buy the A'pex Power FC and have a laptop, would I be better off with a commander or with the datalog software? I don't want to carry my laptop with me to every drivers ed event (my car is packed full anyway)? What about the datalog software makes it more attractive than the commander? Can you do what you need to do with the commander?

SleepR1

I'm with ROTORHP, I'd be ecstatic with 320 rwhp, that's reproducible given any ambient air temp

FWIW, I plan to install a new ported motor from KD Rotary and have brand new Japan spec twins to mate with the "new" ported motor (built from a Malloy Mazda Reman).

Will the A'pex Power FC be able to deal with the higher fuel requirements of a ported motor, and quicker spooling and higher efficiency of the Japan spec sequential twins?

I don't plan to run higher than 10.8 psi from the Japan spec sequential twins (10.8 will be my peak boost level set with the A'pex PFC). I've recently read that the A'pex PFC doesn't restrict boost well, and that a stand-alone boost controller is needed? Can one install a restrictor pill in the wastegate precontrol of the J-spec twins, as I currently have with the stock twins (the orifice diameter of the pill is slightly larger than stock) to limit my boost to 10.5 psi peaks?

Something tells me that even with a modest boost level of 10.8 psi, that the ported KDR motor will make more rwhp than a stock non-ported Reman 13B REW motor, given the same mods on both motors--large IC core (SMIC/HMIC), cold air intake box, downpipe, high flow cat, catback, big *** Koyo radiator. I'd guess at least 320 rear-wheel-horsepower from 10.8 psi with a ported motor?? Any opinions??

93redFD

opps, something happen with my computer and it f**ked up the post.
jeff it looked like you were saying that twins arnt capable of over 360 rwhp. i Know it wont be reliable, but I forgot that he wanted reliable hp... If your worried about reliability, I would go with a small single turbo, like the td06 or 62-1 ect...

ttb

check this out for more info

http://www.fc-datalogit.co.nz/

the datalog is definitely more powerful, but like you said, it is inconvenient carry around a laptop. i would get both the commander and datalog and i think most people start out with the commander and realize they want more functionality and get the datalog.

ROTORHP

Are small single turbos the way to go all the time? I had a some guys tell me that going single opens a can of problems to sort out. True or what?

TomsRX7

As a very basic explanation: when choosing a single turbo, you should use a small one when you want fast response (less lag) but you sacrifice the top end. This is obviously the better choice for a mainly-street driven car where you are spending the majority of the time in the lower RPM's. On the other hand, if you want more horsepower at the top end, you should choose a larger turbo. The cost is that you lose low RPM response (greater lag). This obviously is more of a drag set-up. Hope this helps.

-Tom

93redFD

no not really(with the smaller singles). You have alot less vacumn hoses(I think I have about 4) more space in the engine bay, less temps, and more power. I think that it would be more reliable then twins. It will cost alot more than staying with twins but its worth it. Then the 400 rwhp with be reliable.

ROTORHP

When you go single turbo, you can get rid of all those vac hoses? Control valves and everything? All that junk under the UIM is all smogger crap right?