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Posted
19 minutes ago, kpr said:

Have tuned a couple of fd's  with power fc,    both had single  turbo swaps.  one had a stock engine with a pulsar 6262 (g35)    the other one had an older gt series of similar size with with a rebuilt engine with some mild porting.    both made low to mid 200kw at wheels on low boost.   the one with the pulsar turbo  was more responsive and came on bit sooner.  but both had a stack of midrange and good off the bottom, nice to drive for street cars

Anyway,   power fc is getting pretty old tech now and fairly basic.   but for something like above they are fine.   anymore power  i would look at something newer like a link.  as they arent amazing with bigger injectors, have to fudge the deadtimes and stuff to tune the low load and idle stuff and you are putting your trust in some old electronics,   The  idle control has a mind of its own also.   Need a datalog it or similar to tune them properly,  hand controller is just for small adjustments and a pitta to tune with.  
I would avoid a microtech also, cant say ive tuned one myself  but have heard stories from other tuners  and are old tech now also 

I dont think the air pump would effect anything tune wise

Edit;  Also if you wanted me to tune it.  you'd have to deal with me moaning about the power fc and to buy a link

 

Any idea on the rear housing on the G35 6262? (pulsar) guessing the 1.01? as the .82, .83 and .85 would be a little small right? (it would be a G35-900 in Garrett turbo)

Thats kind of the turbo size I had in my head for similar power goals to the factory turbos (lower boost) (with some more in it :p) on a 13B but always keen to see real world

Rob Dahm says the G40-900 is the best all round rotary turbo but he also pushed 700hp with it haha

 

Posted
5 hours ago, shrike said:

Any idea on the rear housing on the G35 6262? (pulsar) guessing the 1.01? as the .82, .83 and .85 would be a little small right? (it would be a G35-900 in Garrett turbo)

Thats kind of the turbo size I had in my head for similar power goals to the factory turbos (lower boost) (with some more in it :p) on a 13B but always keen to see real world

Rob Dahm says the G40-900 is the best all round rotary turbo but he also pushed 700hp with it haha

 

was awhile ago.    but was a t4 housing,   so probably the .85 housing going by the pulsar site,  since the 1.01  looks to be v band.    rest of setup wasnt anything amazing, china cooler and exhaust

zionfd.thumb.jpg.b761e9ca441aef6bfd075e072fee0050.jpg

this was the other one.  the blue line was stock engine.  and red rebuilt with mild port work.   it was pretty close to maxing stock injectors.     the above one had bigger injectors

HAYDENNEWENG.thumb.jpg.f8c16bdcadc2f7dd61e6db01ef2c53ad.jpg

 

Posted

As a VI with my own IO, I can confirm this is absolutely 100% true. 

I've also heard that you can't have them certified with OE turbos now too, so guess you've got no real option.

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Posted

my guess it looks like it would need alot of drivers /IO's if there are 10 solenoids alone for the sequential vacuum solenoids. what else needs that much going on, bearing in mind its a niche market and catering for the masses.. who would want to spend such amount of money on a shit system. would seriously suck if the turbos then shit themselves which are relatively common when they have been squeezed harder 

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Posted

I'm not sure all those solenoids are for turbo control (sounds like many might be emissions?) and I think that some of the solenoids would be using the same input signal ie secondary turbine feed valve would probably work at the same time as secondary compressor outlet valve. basically I thought the computer's output might be as simple as "i want one turbo" or "i want two turbos", and the rest would be handled in-house by the rat's nest

But given that nobody supports it, probably not

I wonder how the power FC manages it? 

Posted

From what I understand the phasing of the changeover on the sequentials is quite critical, like the old vtec crossover, but quite a bit more going on...and by far the cleanest option to smooth out the changeover is to place the twon turbo setup in a bin, and run a single turbo in true zoom zoom boom fashion.

 

This was from old mate with the fd rally car that ran a bit of a rotary performance shop in the states when FD's were first produced, back when a 10 second Japanese performance car was pretty wild.

The story goes he had maybe 3 of the pre production run cars direct from Japan before they went on sale to run in the IMSA series and to build intercooler kits and even some early dodgy piggyback ecu thing pretty much before japanese tuning options existed...

I think even he referred to it as the purple motor eater, something about lack of knock control on low octane or something..

https://www.rx7club.com/pfs-pmc-272/peter-farrell-purple-box-702385/

 

Oh how technology moved on from 30 years ago..

  • 2 weeks later...
  • 2 weeks later...
Posted

Wait till you go big single churbro and all of the boosts… lots of smiles for not a lot of miles!

You will be able to pass anything. Except a gas station.

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