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04-16-2009
this may be a dumb question like always lol
but im getting ready to start scanning my car and im just wondering what besides KR should i look out for so i dont blow my engine cause i had a custom tune done after a cam install and i just wanna make sure everything is all good with the tune
04-16-2009
02's
commanded afr
timing
PE mode
STFT
LTFT
gear, mph, rpm
04-16-2009
o2s arent super important, but it is nice to see them.
knock, timing, fuel trims, rpm, MAF, and MAP are what i really look at..
04-16-2009
02's
LTFT's
STFT's
KR
Timing
04-16-2009
get a wideband!!!!!!!!!!!!!! narrowband FTL
04-16-2009
True. But I got into the low 12's with the narrowband. But that was kind of pushing it.Originally Posted by QwikGT
04-16-2009
for the extra 200$ id rather not risk another 3k engine build
04-16-2009
you should be able to tell when youre too lean....it knocks and your o2s are "low".
04-17-2009
and what is a reasonable range for degrees of knock i should be at zero but i just wanna know how much KR is enough to be scared
04-17-2009
im not afraid to see 5* when youre tuning.
04-19-2009
well... technically any knock is not reasonable, unless it's false which you will get, but as you tune you'll start to realize whether it's false knock or not. As for the tuning process you're gonna hit knock every now and then.. and when Josh and I were tuning my car back in october, we had 1 instance where if I even touched the gas pedal I was hitting red...
ended up pulling over on the highway, haha
Bio is right, most people keep it 5* as their limit. You're gonna see a lot of little 1* 2* 3* spurts at first. After you slowly dial in your tables it starts to disappear and you'll get your occasional false hits.
04-19-2009
That is what I go by...Isn't every * of KR like 5-7hp you're losing? Man I'd hate to see 3*-5*
But that is just me...
04-19-2009
Well yes, but I think what DWosik was referring to was how much is "safe" knock that the car can withstand while tuning. Obviously as you continue to tune you want to wipe out the knock.That is what I go by...Isn't every * of KR like 5-7hp you're losing? Man I'd hate to see 3*-5*
But that is just me...
Personally I don't go above 3*. If I hit 4* OR 5* I slow down.
I'm guessing this is your VE tune DWosik?
04-19-2009
ve tune?
and i have a question i have only a certain amount of time for this so i kind of need a quick answer is v.1 of hp tuner worth getting for $70
04-19-2009
if I'm not mistaken, you can just upgrade to the 2.2 version through download off hptuners website. I bought my HPT software which was version 2.2 when I got it so I've never done it. Check HPTuners.com >> Performance At Your Fingertips and see if that is possible. I may be completely wrong! So make sure to check!
Also you asked what a VE tune is. Since you're just starting out use this.
Gary's HP Tuners Basic Tuning 101
Should explain a lot to you and give you a better understanding.
04-19-2009
i was seeing up to 10* when i started tuning.
04-19-2009
Ouch... I didn't have it that bad. I occasionally hit above 5* but was very rare.
04-27-2009
at WOT i see about 3*-3.5* sometimes I dont think thats too bad since I have only tuned torque management and the basic stuff, Im starting VE today.
04-30-2009
Echoing what others have said here, getting a WideBand O2 setup installed would be something you should make a priority. But having said that, if you can't get one, then watch your B1S1 O2 sensor output voltage at WOT. It should stay above 0.890 volts (which according to MY wideband O2 is about 11.8:1 AFR; but remember NBO2's are not very accurate at measuring AFR's much outside of the 14.7:1 threshold).
I like to see KR stay below 3 deg at WOT.
I also like to see STFT and LTFT's within a +/- 8% window of operation. The closer to 0%, the better -- but not necessary.
-ryan
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