94hatchvx

well i finished my turbo b16 a couple weeks ago and ill be getting it tuned on chrome pro soon or uberdata. i have a chipped p28 ecu btw. i have never used chrome or uberdata before and i will be tuning with a knock sensor, my question is can chrome pro and uberdata log knock? do i have to buy something seperate to log knock if so what is needed? thanks

94hatchvx

bump

94hatchvx

bump. come on i know theres tons of people running chipped computers out there.

nowtype

Neither will log knock in a meaningful manner. Make yourself a set of det cans or something similar.

94hatchvx

a set of what? is there any other way to just use the stock knock?

94hatchvx

bump need help so i can get tuned

borat

I believe crome will log knock if the knock board is present. The p28 has no knock board, so it won't work with that. Even if you log knock, the stock knock sensor only works in closed-loop mode in low-load conditions (cruising, idling). It doesn't work at full throttle since it is a simple unit and there is too much noise for it to handle at higher RPMs. I don't know of any honda tuners out there who tune with a stock knock sensor, if at all. They're really only used to detect bad gas so the engine can retard timing. The only reason I'd even try to tune with a stock knock sensor would be to get better fuel efficiency. Detcans work well for street tuning because you are using a highly-advanced computer (your brain) to discern knock from regular engine noise.

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by borat &raquo;</TD></TR><TR><TD CLASS="quote">I believe crome will log knock if the knock board is present. The p28 has no knock board, so it won't work with that. Even if you log knock, the stock knock sensor only works in closed-loop mode in low-load conditions (cruising, idling). It doesn't work at full throttle since it is a simple unit and there is too much noise for it to handle at higher RPMs. I don't know of any honda tuners out there who tune with a stock knock sensor, if at all. They're really only used to detect bad gas so the engine can retard timing. The only reason I'd even try to tune with a stock knock sensor would be to get better fuel efficiency. Detcans work well for street tuning because you are using a highly-advanced computer (your brain) to discern knock from regular engine noise.</TD></TR></TABLE>

who makes a good aftermarket knock sensor then? if anybody at all?

borat

Knock sensors are not well agreed upon. Some swear by them, others have sworn off them. I just searched around to see if anything had changed, and it really hasn't. There are some devices out there that claim to be super-duper knock systems (J&S Safeguard is one I know a lot of honda guys used to run), but the fact is that it's all in the tune. Knock sensors aren't really used when tuning, most prefer det cans or plug reading (both of which are much easier to do on a dyno). So if you get your car tuned well with no knock on a dyno and always use premium, then you will be fine. If you're street tuning, just start with the ignition map that's appropriate for your engine, retard boost by 1.25 per psi, and tune your AFRs until you can get to the dyno to do the ignition.

If you're really paranoid about it, then you can install a J&S or a Knock Link light that will light up when it thinks you're detonating, but even these systems aren't 100% accurate. The J&S for instance can be fooled by the noise from the VTEC crossover, so it uses an input wire to know when VTEC engages.

blinx9900

i know what you mean, i have aem ems and after vtec crosses over OMG the graph gets crazy but i know its just noise... every time i use the NLTS it spikes to 4 volts lol

94hatchvx

so all you boosted guys are tuning without a knock? i didnt even think that was possible

abnaasefmb

Once upon a time people would look at there sparkplugs and magically tune their engine some how, sound unrealistic to me.

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94hatchvx &raquo;</TD></TR><TR><TD CLASS="quote">so all you boosted guys are tuning without a knock? i didnt even think that was possible</TD></TR></TABLE>

not my tuner, i know for damn sure he logs knock/ign/af/load/rpm/tps/etc...

nowtype

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">

not my tuner, i know for damn sure he logs knock/ign/af/load/rpm/tps/etc...</TD></TR></TABLE>

But if your knock sensor gives off bunk data, what is he actually monitoring?

Again, engine ears, detcans, whatever other name they want to go under. That is what you should be looking into.

94hatchvx

what do you mean the p28 doesnt run a know due to no board or pin or w/e?

borat

The p28 doesn't have the knock circuit board. Honestly, it isn't that important unless you have bad gas in your area, or a bad tuner.

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nowtype &raquo;</TD></TR><TR><TD CLASS="quote">

But if your knock sensor gives off bunk data, what is he actually monitoring?

Again, engine ears, detcans, whatever other name they want to go under. That is what you should be looking into.</TD></TR></TABLE>

well were pretty familiar with what my knock graph looks like at this point, he knows how much noise is normal and whats not, it just comes down to experience i guess, he always told me up to 2 volts is usually noise, which is true cause if it was knock my motor would have blown a loooong time ago.