APEXI SITC and SAFC on 1jzs

[soara7mgte]

has anyone installed safc's or sitc's on their cars before?

has anyone specifically installed either of these on a 1jz?

i have both of these and am wanting to install them on my 1j, i have all the instructions and that but just wondering peoples experiences with these interceptors, especiallyon a 1j.

I was also thinking that the sitc might eliminate the retarding of timing on upshifts , but most probably not , since it only works by adjusting the actual timing up or down from what the ecu sets it as and not by taking over the timing all together?(correct me cause i dont know much about timing).

does anyone think ill make much power or efficiency gains? and does anyone know any where to get these competently tuned (in newcastle or sydney or central coast) and what price should i say is a rip off for tuning(had no experience with tuning , both doing it and having it done)?(i will be installing them myself and am confident in my ability to do so)

cheers everyone and sorry if this has been discussed before

[sw20r]

you might make abit more power. then maybe not..

I've heard if you use SAFC on toyota cars it will either retard or advance the timing depending if you give it more or less fuel.

I had the SAFC 1 before and ran it on my Stock GZE AE101. Made 96FWKW with abit more fuel top end but it pulled the timing back alot after 5,500RPM and cuased a fuel cut.

Unless your car really is out of tune you wont benefit much maybe 5-15RWKW

[soara7mgte]

thanks for the reply ,im tipping that i will benefit a fair bit because i think im running rich because of the black dust build up i get on the rear of my car, anyone else's input ?

[chris davey]

You will make more power with a safc on a 1jz for sure. It will also increase boost cut because you will be pulling fuel out. You will most likely need to pull out about 15% or so but that will depend on other mods.

What this does is tells the ecu that you are actually running less boost than you are. This will put it at a different point on the fuel map (less) and less fuel is injected. As was said it will also affect your ignition as it will think you are running less boost. I am not sure exactly how you could tell what it is doing but generally if you are running less boost then it will advance the timing more however if it is advanced too much and it knocks then the ecu will pull timing back for safety.

I am unsure how the safc and sitc work together. I would probably just use the safc to begin with as it is a proven performer on the 1jz.

Oh and get it tuned with a wideband o2. Don't guess

[chris davey]

Also, here is an example of power from minimal mods really.

BFI
dumps/exhaust
440's
FMIC
SAFC2
AVC-R
RSM
high flowed stock turbos

20psi, BP ultimate

293rwkw.

Pretty impressive for the only ecu mod being a SAFC.

[soara7mgte]

BFI?
are the 440s from 7mgte?
how much are some highflowed ct12 s worth?

[wilbo666]

are the 440s from 7mgte?
how much are some highflowed ct12 s worth?

The 440cc's would be from a 2JZ-GTE at a guess (7mgte is top feed as opposed to the 1jz side feed).

Highflowed ct12's are about 2k+ i think.

And yep there is power to be made by taking out fuel on boost from the 1JZ, god the stock ECU runs it rich! :S

Cheers
Wilbo

[Big rob]

BFI is just a cold intake. Check it out on lextreme i think. Cant remember. 440's are off a 2jz i think, cant remember if it was JDM or US that used 440's anyway he has 440's which could be entirely aftermarket but not from a 7M.

[chris davey]

440's are from JDM 2jz.

wilbo is right on the price of highflows. There are different variations but start from $2k and can go up to $5k I have heard for the ball bearing GT28 sort of turbos.

[soara7mgte]

440's are from JDM 2jz.

wilbo is right on the price of highflows. There are different variations but start from $2k and can go up to $5k I have heard for the ball bearing GT28 sort of turbos.

oh yer sweet, whats a BFI?

[chris davey]

go to www.planetsoarer.com, www.soarercentral.com or www.lextreme.com and search.

Big Fu(king intake

[lumpy]

jza70-mel from the old forums (and a couple of years ago) had an SAFC2 - the story of tuning it made some magazine like HPi or Zoom (without his knowledge or permission ).

Anyway it picked up a lot more mid-range power and the over-all gains were quite good. There was a fair bit of fuel taken out, especially in the top end. This was without twin dumps, on stock turbos, 3 inch exhaust, auto.

Worth getting it tuned on a dyno by someone with experience in them though. I think it cost mel about $350 for the tune?

[soara7mgte]

[QUOTE=lumpy]jza70-mel from the old forums (and a couple of years ago) had an SAFC2 - the story of tuning it made some magazine like HPi or Zoom (without his knowledge or permission ).

Anyway it picked up a lot more mid-range power and the over-all gains were quite good. There was a fair bit of fuel taken out, especially in the top end. This was without twin dumps, on stock turbos, 3 inch exhaust, auto.

Worth getting it tuned on a dyno by someone with experience in them though. I think it cost mel about $350 for the tune?[/QUOTE'
ok cool, so you guys dont expect to make much of a gain out of an SITC , does timing changes usually net significant enough gains in a turbo engine? or is it more boost = less timing kinda thing? or if you have a more limited turbocharger setup(as in 14-15 psi because of the ceramic wheels) is timing a good place to make power?

[chris davey]

Timing changes will make more power but only if the engine isn’t knocking so you have to run good fuel when you up the boost.

I say just use the SAFC and see how that goes. I am not a big fan of using lots of sender benders but I think using just a SAFC is ok. Just not sure how altering the ignition via SITC would affect the rest of the engine as the SAFC will already adjust timing as previously said.

I have that article somewhere on the 1jz with safc tune.

I wouldn’t pay more than $150 for a tune on a SAFC. Shouldn’t take more than an hour.

[lumpy]

Once the SAFC is set up I'd be very tempted to try the SITC - after all if you already have the SITC it's not costing you anything (besides dyno time). It would be interesting to see just how much timing you can run and how far off the stock map is.

I'm with chris on the piggyback thing though - by the time you stuff around with them you could have a full-house ecu installed.

Out of interest has anyone mucked around with an E-manage on a 1jz?