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  1. #1
    Gods Chariot Vteckidd's Avatar
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    yeah you still made good power so i wouldnt think a turbo was "bad"

    but, i wouldnt spend the money on twin turbo or getting another set of turbos considering:

    XS Power manifold $200
    Wastegate $200
    BOV $100
    60-1 Turbo $500

    550whp, priceless.

    its too cheap to do single, an you can make 500-550whp with a stock ecu and an AFC. i know cause we have done it, an thats what im doing on my car
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    Quote Originally Posted by Mr. 2JZKIDD
    yeah you still made good power so i wouldnt think a turbo was "bad"

    but, i wouldnt spend the money on twin turbo or getting another set of turbos considering:

    XS Power manifold $200
    Wastegate $200
    BOV $100
    60-1 Turbo $500

    550whp, priceless.

    its too cheap to do single, an you can make 500-550whp with a stock ecu and an AFC. i know cause we have done it, an thats what im doing on my car

    exactly.. I was told to check this ceramic valve on the intake manifold which is right above the dp.. Shawn Kerr said he and his buddy both had a problem with that same valve.. but whatever the case.. its very cheap to go single now a days... so why not for over 100+hp gain..
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    Certified Gearhead miro_gt's Avatar
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    Quote Originally Posted by Mr. 2JZKIDD
    yeah you still made good power so i wouldnt think a turbo was "bad"

    but, i wouldnt spend the money on twin turbo or getting another set of turbos considering:

    XS Power manifold $200
    Wastegate $200
    BOV $100
    60-1 Turbo $500

    550whp, priceless.

    its too cheap to do single, an you can make 500-550whp with a stock ecu and an AFC. i know cause we have done it, an thats what im doing on my car
    AFC ... hell no. Get something that controls timing .. or you're screwed

    well, you can always do it the ghetto way and retard the dizzy (hope supras have those)

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    WANTS TO GO FAST! 2.0civic's Avatar
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    Quote Originally Posted by miro_gt
    AFC ... hell no. Get something that controls timing .. or you're screwed

    well, you can always do it the ghetto way and retard the dizzy (hope supras have those)

    WTF. How come that whenever someone posts a problem or ANYTHING in general on here, theres always people that say shit and dont know what the hell they are talking about. If you are trying to make a point, post facts, not some BS opinion. Not trying to be a ass but ive seen this ALOT and people say "blah blah 600 whp on 5 lbs of boost..." with no proof and its the same when people say shit like this...sorry bout the rant
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    Certified Gearhead miro_gt's Avatar
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    Quote Originally Posted by b18hatch
    WTF. How come that whenever someone posts a problem or ANYTHING in general on here, theres always people that say shit and dont know what the hell they are talking about. If you are trying to make a point, post facts, not some BS opinion. Not trying to be a ass but ive seen this ALOT and people say "blah blah 600 whp on 5 lbs of boost..." with no proof and its the same when people say shit like this...sorry bout the rant
    sorry for the late replay .. but I was too busy this week

    anyways, the reason that I pointed that was becasue I've seen waay too many damaged engines because of running the AFC. I'm not sure how much you guys are in the tunning, but timing is THE most important thing to deal with. Fuel delivery just determines if you are gonna be able to run at all, or not. Keep under 12:1 A/F and you start going, but from there it's all about timing.

    So, I guess you have an idea how the AFC works ... Anyways, it ensures fuel delivery based on the stock fuel/timing maps of the car/ECU used. When you install bigger injectors (almost a must in turbo app.), you start compensating and adding fuel with the AFC by changing the MAP signal, and therefore telling the ECU that the engine load is different, and the ECU sets different fuel delivery and timing. Doing so, you ensure the fuel delivery, but your timing map gets screwed big time ... and sooner or later you engine does the same. So how do you compensate for the timing ? .. well, one way would be to retard the dizzy (if there's one). Another way would be to install MSD ignition and work from there ... But running only the AFC - as I said above - hell no.

    However, AFC works different on different cars .. some may run better, some may not. But in general, you CAN NOT achieve that perfect tune that we all aim at for your car running the AFC.

    So as I've said before, if it's gonna be a hack, then EManage it is, because you can compensate the timing with that unit. However, chipped ECU or stand alone is best.

    ----

    sorry for taking the topic kinda off a little ... I hope you fix your car

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    Gods Chariot Vteckidd's Avatar
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    Quote Originally Posted by miro_gt
    changing the MAP signal

    USDM supras have MAF sensors BTW. and what your saying is true to some extent, but this aint a honda or mitsubishi.

    you can use an AFC up to around 500-550whp safely without haveing to chip the ecu to pull timing out, as long as its TUNED RIGHT
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    WANTS TO GO FAST! 2.0civic's Avatar
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    Quote Originally Posted by Mr. 2JZKIDD
    USDM supras have MAF sensors BTW. and what your saying is true to some extent, but this aint a honda or mitsubishi.

    you can use an AFC up to around 500-550whp safely without haveing to chip the ecu to pull timing out, as long as its TUNED RIGHT

    bolded part is all i really needed to read....
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    Proud to be Retrosexual Jaimecbr900's Avatar
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    I've ran a SAFCII for over 2 years both S/C'd and Turbo'd in the same car, stock engine, with now over 110K on it. I'm also not running very much boost either, but I've not had any issues yet.

    I am anal about watching the gauges in my since it's a daily driver. I have a wideband and it doesn't go lean EVER, which probably explains why I haven't blown the motor yet. The knock sensor is also not going nuts either, even with only 93 octane being run thru the car. The ECU hasn't been touched, except to hook up the SAFC.

    So I don't see how running smaller amounts of boost would be that much different in a 2jz.

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