SR - tuning question

A place to discuss the systems and methods of tuning Nissan engines.
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sunnys14
Posts: 1600
Joined: Sun Dec 05, 2004 8:59 pm
Car: S14

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quick question, i know how to tune safc2 but im new to SRs (my other car, built KA-T in s14)

will a safc2 be sufficient tuning for 740cc's, hks step 1 cams and s15 turbo?

i know 740s will be ok since theyre still in the 50% range of fuel correction, what about s15 turbo with higher boost and cams? on my KA-T i had to correct timing and a whole bunch of stuff as i turned up the boost... what about SR? i plan to run about 18psi on the s15 turbo


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da40
Posts: 900
Joined: Thu Mar 02, 2006 12:07 pm
Car: 1995 SE 240sx

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hmmmmmmmmm?

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sunnys14
Posts: 1600
Joined: Sun Dec 05, 2004 8:59 pm
Car: S14

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nvm, ill just do it and find out

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da40
Posts: 900
Joined: Thu Mar 02, 2006 12:07 pm
Car: 1995 SE 240sx

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let me know what u find out ,ive got the same set up only i have an ethalpy ecu

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twofourzeroSX
Posts: 773
Joined: Mon Apr 12, 2004 8:38 am
Car: 91 sileighty
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ive read that you shouldnt try tuning nething over 555cc with SAFC II but i have no personal experience

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nismoconvert
Posts: 17
Joined: Mon Sep 20, 2004 12:25 pm
Car: '96 se-r
'90 s13
'86 bronco

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IMO an safc is just a bandaid device and not a real tuning solution so i'd try either an enthalpy ecu or i'd get something like an apexi pfc and have someone dyno tune it.

kingin
Posts: 12
Joined: Sun Oct 16, 2005 7:03 am
Car: s13

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Should be fine I'm running 650cc injectors from deutsh werks. With a S15 T28, aeromotive FPR and stock Sr Maf. Got 286 whp with just SAFC 2. But was dyno tuned (running pretty rich too)

Blown240sx
Posts: 1963
Joined: Thu Apr 21, 2005 3:20 pm
Car: 1996 240sx

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THe thing is when you run such large injectors on the SAFC once you pull so much fuel out with it you actually add timing to the map which will lead to detenation problems. I woulnt go to 740s on a SAFC personally but if you have someone who can tune well enough you might be able to pull it off. If you have money I highly recommend the Power FC.

I view the SAFC2 as a simple tuning tool for minor adjustments.


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