dustin

Just wondering what your total advance is on pump gas (stock gsr)?

at say 8psi

DIRep972

iTrader: (1)

no boost Dustin? YOur probably making a joke w/ this post ahah but I'll reply anyways. 93 octane w/ 9psi on my jdm gsr(10.6:1) the honda knock sensor picked up knock @ 20 degrees of advance.

dustin

Edited the post, I'm dumb hehe.

I am running 25.5@4psi, 22.5@8psi, 20.5@11psi

How do you know the honda knock sensor picked up knock? hehe. I've datalogged the knock sensor before with the AEM and the voltage data didn't seem very useful. It would make more "knock" at partial throttle out of boost.

What's also funny is that running an FMU the car is running like 30deg total advance @8psi... and I used to have a J&S and it never picked up knock (except maybe a few times boosting in 5th gear up a hill...)

DIRep972

iTrader: (1)

Hehe, I don't. But it seemed too accurate not to be. There was absolsolutely no knock before 9psi, and once the timing was pulled back to 18 degrees it went away. With the AEM you set the base knock curve yourself and anything out of that range is considered knock right? Were u using the AEM on a stock motor or built motor?

I kinda like the fact that w/ the hondata ur using the stock honda ecu and the knock curve was already set up at factory Honda for a stock motor. With those aftermarket knock sensors or systems that are set up by the end user it seems to me that there is a higher chance of bad interpretation. Not saying u interpreted it wrong but Im sure Honda set up there sensor so it wouldn't pick up the natural noises of the motor.

dustin

I was using the AEM on a stock b18c1.

hmm. I guess I could pull some timing... I dunno the motor doesn't "seem" like it is pinging (I had my old gsr audibly ping running a 9:1 compression "base map" @ 7psi .. I had stock motor.)

Seems like you need some sort of "algorithm" to interpret knock sensor data... I'm not convinced that higher voltage = knock necessarily

Regardless I am running a P28 so I have no knock board. i have an extra P72 but it hasn't been socketed.

DIRep972

iTrader: (1)

yah, I agree. You could always refer to the old school method's of checking spark plugs and looking for MBT on the dyno.

dustin

Here are my timing and fuel maps just for fun:

dustin

I went out and looked at my plugs... car was boosted on pretty hard (about 9-10psi) and I turned it off about 3 minutes later (some idling, oh well). Plugs look fine to me... they are brand new BKR7's gapped at .032. Insulator is entirely white except for deep inside the plug where they are turning golden brown. Nothing on the strap except some gray/black. I see some very small, almost microscopic black marks on the insulator of each plug. Doesn't really look like a product of detonation to me... I've seen silvery specs on the plugs of my old car (GSR) when it was pinging. These don't look silver to me but black... like carbon. There aren't very many of them anyways.. not sure if this is significant.

mrbsponge

ya know we had such a hard time getting the timing right on my car the motor is not a gsr but an 8.5:1 b16 81mm.

and with small bores not liking timing, and low compression needing timing we were a little concerned on which way to go. mine is .75 degree per pound of boost, and before the timing retard from boost we were in the low 30s and high 20s. like 31, 30, and 29 most of the time in boost.

if we DIDNT do this it would pop like crazy and couldnt get a full pull. my plugs ended up being gapped at 22, and they were ngk 7s as well.

just wondering if anyone had this issue, this was also at 16psi from a t3t4.


anyone?

Flr Power

It is knocking.

dustin

pics of #3 plug

http://iserve.honda-tech.com/i...=2627

Flr Power

Definitely knocking. You can see metal spec on it. Nice pictures by the way.

dustin

Hmm looks like metal in the pics but in person it doesn't look like metal heh. Oh well. Boost was spiking up to 12psi earlier today. I dunno when the specs appeared.

Flr Power

I would think this is just the beginning. How long have you been running like that?

dustin

I just turned the boost up today. It was at about 3psi until this morning when I put the boost controller on. Plugs have about 500 miles on them.

Flr Power

I would back timing at least 4 degrees.

dustin

You think? I ran my old GSR on hondata and didn't get it to ping on the dyno @7psi until about 24-25 deg of advance.

p.s. the timing is right. w/ service connector jumped it idles at exactly 16deg.

These plugs looks just like the plugs on my old GSR did. put 25000 miles on that car turbo and never popped the engine hehe.

Flr Power

Time to turn up the boost. Go at least 15 psi.

dustin

?

sporkcrx

LOL, I would stop listening to that guy.

dustin

I changed it to 24.5@4psi, 20.5@8psi, and 18.5@11psi

Seems slower but I also turned the boost down a couple psi hehe.

I dunno. I still think the pics of the plug looks fine. That pic looks like every new plug I have checked on a honda... boosted or unboosted.

dustin

Drove the car to work... AFRs are solid high 11s. Seems fine.

TurboXS mbc is spiking sometimes. My Zeitronix datalogs are funny I think...

I rolled slowly onto the throttle in 2nd gear and the car is fine until high RPMs when the wheels break loose. Zeitronix datalogs show a max voltage of 4.71 from the map sensor which according to my (probably wrong) math is about 9.5psi. Zeitronix datalogs also show me hitting 8660rpm at this point even though the hondata rev limiter is set to 8296rpm. After the shift to third the car held a little under 8psi solid.

I'm not sure why the turboxs is spiking... I ordered an AVC-R (thanks Ricky@wiredspeed ). I figured I'd try an MBC again... and again I go back to the AVC-R haha.

dustin

Got AVC-R in. car seems to be fine (as it seemed before) on new ign advance.

Who knows.

0mtber

iTrader: (2)

Your timing is too advanced in my opinion. But honestly, you won't know how much timing your actually running until you sync your distributor with your timing maps.

Make a temp bin file with all of your timing values at 16.5 deg, then shoot your distributor timing to 16.5 deg (red mark) using that rom.

Thereafter, go back to your normal rom & retard your timing by atleast .8-.9 deg per lbs of boost. You shouldlnt be running more then 14 deg of timing at 11 psi until you get on a dyno and you can tune knock or MBT.

Every setup is different. Timing will depend on manifold type, turbo, gas type, compression etc.

dustin

Distributor is at 16deg. I am running what the maps say.


with 1deg per psi, I'd be running 27.75deg @ 4lbs, 23.75@8lbs, 20.75@11lbs

Right now I am running 24.5@4psi, 20.5@8psi, and 18.5@11psi


I just can't see how I should be running less than 20 degrees timing @8psi heh. w/ FMU on a GSR the car is running over 30degress of timing @ all boost levels... heh.