Quote:
Originally Posted by mhmitszach
Shift kit was a failure as far as I can tell. teamzx2.com forums always said resistor hot and my always stayed cold, so I'm assuming it didn't do anything. Going to try to just wire it straight in and see what that does.
It's shifting terribly in to the last gear. 45 mph and 2500 rpm where as on a good day about 41 and 2000 rpm.
Still have to remove upper resonator on air intake and replace that. But need another part or two. Try to do that tomorrow I suppose.
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I'm chiming in a little late, but I just joined up. I am an active member on TeamZX2, going by the same screen name. The shift kit will not save you anything in gas. If it's not shifing into high gear when cold, then your trans is just a bit worn. I have about 50,000+ miles on my ATX and it shifts into high gear when cold around 45 and between 42-45 when warmed up. I installed the shift kit resistors into mine and it did not effect mpg's but did make it a bit more sporty to drive. The resistors should get real hot, maybe even melt stuff close to them
The upper resonator should not get you much of a gain by itselt, but it needs to be done.
The biggest single gain I got was the 5.6K ohm resistor in the IAT sensor, that got me about 3mpg. It doesn't work so good in the winter, so you might no see the change now, but do it like your life depends on it. It only cost 99cents and works so well for the ZX2.
If you haven't already, pull the Knock sensor, you won't see much of a gain below 3K rpm, but above that it will run so much harder. For my car it smoothed out the entire power band because it was randomly pulling timing.
Toss your stock muffler if you got the itch. It is quite a restriction. Any strait thru unit will liven things up. I put on a SVTF header and it really added some meat to the bottom of the power band, right were I want it for cruising in traffic.