how many people got the apexi TT penstyle?

[ExoticTSI]

i was wondering if the 02 voltage and a/f ratio gauge that it has built in is accurate or not Thanx.

 

[CanadianTSi]

Yes they are

 

[jetdriven]

mine's off by .02 on the 02 and .4v on the volt display. properly grounded as per the instructions.

 

[talontsi01]

I have mine hooked up and the voltage isn't exact, but its pretty close. As far as the o2, I dont look at it. I have an a/f gauge.

 

[FourGdrvr]

The a/f ratio isn't too dependable on the apex turbo timers. It is only a calculation from the stock o2 sensor voltage. So the a/f is only good as the stock o2 which isn't that great. On top of that, the voltage reading in the unit has a filteration, so the response time isn't very fast. It takes a second before the voltage change is registered. (autometer a/f o2 voltage reads faster).

Honestly, you shouldn't be depending your tuning too much on this. It will help to you get big injectors somewhat tuned, but you really need a wideband to tune