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Apexi Super ITC - Any good?

gtstii

By gtstii,
in Engines & Forced Induction

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GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

gtsii, I personally wouldn't buy one, as a number of people here have had major issues with there's due to it's inability to change the timing with load. Yes it will give you more power, but at what cost? A few engine rebuilds have been the result here:(

Gav Mentor

Gav

Posted
Posted

They are 2 dimensional only, adjusting timing at various rev ranges.

As GTS-t VSPEC says, they make no account for engine load (measured by AFM voltage in the case of a PFC).

I've found pinging to occur over a similar rev range but only under certain load condidtions (mainly coming on boost in higher gears).

With the ITC you either have to be real conservative and dial out timing across this rev range, which means that you lose a lot of punch in 1st and 2nd gears, or risk damaging your motor.

Your call, but personally I wouldn't risk it.

BHDave Grand Master

BHDave

Posted
Posted

It won't do you any good because you're still running a stock cooler.

If you advance the timing on it it'll be good for all of about 15 seconds and then it will ping it's f*%king head off (literally) once the cooler soaks up the heat.

As with most gizmos that screw with the ecu's imputs, including SAFCs, boost cut defenders and ITCs, you can make some decent performance gains. The downside is that there is no real mechanisim programmed into the things for fluctuations of the input parameters after the initial setup.

Basically what I'm saying is that there is a performance gain to be had but dont get greedy. Set it up on a dyno in the first place and don't go looking for maximum outright power figures. If it starts to ping on the dyno and you only turn it back slightly you can pretty much garantee that it will ping like crazy on a hot day in traffic.

Adjust it in small increments and you will be happy with the results. Go crazy and you'l blow a hole in the top of a piston.

Dave

Guest RedLineGTR

Guest RedLineGTR

Posted
Posted

The Super ITC adjusts ignition timing by +/- 15% by modifying the crank/cam angle signal on certain vehicles. The timing curve is adjusted by setting the timing at 5 different points along the RPM range and the values between are interpolated by the ITC from those 5 points. The Super ITC used in conjunction with the Super AFC fuel controller creates a new dimension of tuning with piggyback computers. Apexi recommends having the Super ITC installed and tuned by authorized shops

BHDave Grand Master

BHDave

Posted
Posted

They're pretty old. The old SAFC's (like 1st and second generation) looked very similar.

I remember reading about an engine swap, SR20 into a stanza or something where they used both an SAFC and ITC but at the time they were about 700 each so I couldn't fgure out why they didn't just get a microtech or something fo the same money.

They'll do the job but I still say be very careful.

Hey redline, did you cut and paste or do you really talk about new dimensions of tuning? :P

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