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Those are some crazy rich AFR's, could easily pick up 20-40rwhp just by bringing them into the 11's. Your boost is all over the place, probably due to being super rich.
If you are going to be happy with 380-400 wheel hp on a conservative tune and want a bargain, BNRs are a great deal. I sell a lot of them. However if you feel you will want more than 400 hp and want to ditch the complexity of the twin turbo setup, so with a single. No one misses the feel of twins if they have a properly setup single turbo car. Other pluses are there is more room to work in the engine bay and the motor will run cooler because the bulky twin turbo hardware will be gone. With today's turbo technology and my manifold design, I can easily set up a car to make a bar of boost under 3000 rpm and make 450 hp +
Unless you're super hard pressed on money, or in a rush and you need a simple upgrade ASAP, I don't see any reason to go BnR. If you don't have the cash, save. It's worth it. Even if single turbos gave up power on the low end, how often are you there when you're driving aggressively?
If you need a manifold btw, I have one for sale in great condition and I think it's actually ceramiccoated as well.
Last edited by Supernaut; Jun 28, 2016 at 12:09 PM.
I wanted to stay sequential but repeated solenoid failures put me off. the last failure I had was 2hrs into a track day which kinda ruined it.
That was what made my decision to go EFR7670. Based on all the results I've seen the low end loss compared to twins is minimal.
I'm wondering why I don't see more guys using the 7670. It seems most don't want to drive around with more than 400whp and that seems to be the sweet spot for this turbo. Best spool and 400whp potential? What's not to like? I have been told the 7670 will "strain" to make over 400, reducing turbo life though. Not sure if that's true or not.
I think alot of people are in the mindset of "if I'm spending X thousands to go single I may as well make massive power". Whereas I just want a bit more power than OEM on a reliable turbo system.
I'm really enthused by seeing the results so far on the 7670, and ultimately if I decide I don't have enough power I'll be a turbo swap and a map away from 500hp on an 8374 as everything else is specced to cope with way more power than the 7670 can provide. Well, except my clutch perhaps!
There is nothing wrong with a Power Fc. Only downsides are it does not have the failsaifs a more modern ecu like AEM or Haltech does. For example, you wouldn't be able to set it to cut boost or retard timing if the car goes lean, or loses oil pressure, etc. You also do not have flex fuel capability and can't run direct fire igniton.
There is nothing wrong with a Power Fc. Only downsides are it does not have the failsaifs a more modern ecu like AEM or Haltech does. For example, you wouldn't be able to set it to cut boost or retard timing if the car goes lean, or loses oil pressure, etc. You also do not have flex fuel capability and can't run direct fire igniton.
I don't know I'd consider that as 'something wrong'. The Power FC, while supporting most of the stock features, has zero adapation capabilities, poor diagnostics/failsafes, poor documentation (for english speakers), and (though I know some people have gotten it to work fairly well) marginal boost control schemes. There's absolutely no point in settling for that in this day and age of ECUs.
I don't know I'd consider that as 'something wrong'. The Power FC, while supporting most of the stock features, has zero adapation capabilities, poor diagnostics/failsafes, poor documentation (for english speakers), and (though I know some people have gotten it to work fairly well) marginal boost control schemes. There's absolutely no point in settling for that in this day and age of ECUs.
It doesn't mean there is anything wrong with it. I tell a Power FC what to do, and it does it. No bugs, no hickups like many other ecus. I still feel it is the best bet for mildly modified cars. If you want the bells and whistles certainly Haltech or AEM Infinity.
One more thing, I'm sure my PFC is fine, but would there be any advantage to getting a haltech or aem ecu?
If you're ok with computer tech from the early 1990's and don't ever plan on going over 400whp, than I'd guess the PFC is ok.
Personally, I am of the mindset that the PFC is very outdated and becoming a "weak link" in any system that it being seriously built with anything in mind OTHER than sequential twins at sub-400hp.
But that's just me... If I had waited on a better ECU to fire up the car from my previous rebuild than I *probably* wouldn't have lost that engine when I experienced a catastrophic oil leak on the highway.. A newer ECU could/would have caught the sudden drop in Oil Pressure and gone into limp mode or just shut off completely... The PFC just kept chugging along and I chewed through several bearings, an e-shaft, a rotor, a housing, my turbo (plus all the other stuff my bearings compromised) as a result..
It doesn't mean there is anything wrong with it. I tell a Power FC what to do, and it does it. No bugs, no hickups like many other ecus. I still feel it is the best bet for mildly modified cars. If you want the bells and whistles certainly Haltech or AEM Infinity.
Fair enough. I suppose I'm just a nerd that likes his toys :P
