dissonance

I have the smh pcv mod, seems to be stop a decent amount of oil. Maybe a catch can would stop even more of the oil? After the smh mod I still had knock at any rpm from 2,500 to red line, seems to show more when I’m in 3rd or 4th gear (a4)

I used gm’s top engine cleaner and it seems to be a great product. Lots and lots of smoke! After letting the car idle for 10 minuets or so I took it on the street to finish cleaning it out and let me tell you, I think I have seen one car smoke more then mine did. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Once everything was cleared out, I did some kr testing and its still there. 3 degrees max; I would say the common value is 2. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> wot or part throttle I was showing about the same kr

My mods are
Whisper lid w/holly air filter
Fast toys ram air system
2002 z06 85mm maf
Slp bellows kit
Gutted cats w/o2 SIMMs
Slp loudmouth
160 Thermostat with on/off fan tuning
htpp3 I am using the power tuning but I was knocking before I added it

I have a maft when I had ported ends on my stock maf. My ltrims are normal at idle. -1.6 to 0%. I am showing lean number like 8% to 12% while normal driving. I have base and wot set to 0

DravenMyers

Did you check to see if it was false knock retard? Try running the car with 100+ octane and see if it still shows up.

dissonance

Yeah that’s something I need to try. I have this link about how to make your own octane boost,

http://www.gnttype.org/techarea/misc/octanebooster.html

what would be the best way to do this? Something on that site or is there a product I can get off the shelf? one bad thins is I don’t know of any places around here to get unleaded race fuel <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

I was reading you can add about 5% to 10% top engine cleaner and gas to help clean the injectors. Would that be a bad idea?

Oh also I have ngktr55’s and 10.4mm Taylor thunderbolt plug wires. So I would think there is no problem with the spark, I not getting any misfires ether.

<small>[ August 06, 2002, 11:06 PM: Message edited by: dissonance ]</small>

McRat

go to www.76.com and station locator.

find stations that sell race gas. It's 100 unleaded at the pump. go 50/50 should be plenty.

Are you too lean at WOT?

dissonance

i used 76's web site and it told me the only states they sell race fuel in are Arizona, California, Florida, North Carolina, Nevada, Washington

my o2's are around .88mv to .87 (.89 is dead on right? should i go a little richer?

<small>[ August 07, 2002, 08:56 AM: Message edited by: dissonance ]</small>

dissonance

I will try and richen the WOT up some more. I have read if you’re at 80% or more throttle the computer reads WOT fuel tables? I’m I misinformed? while costing in 3 or 4th and i give it less then 50% throttle I get 2 or 3 degrees of knock, the car also sounds like it under a large amount of load.

Yeah I am showing about 10 to 8% at part throttle. Ltrims read about 0% or a little below that at idle while in park.

TrentSS

You're right. Cell 22 = WOT. Anything >80% is considered WOT.

dissonance

tonight when i go home i will move the WOT the 1st rich setting, 2% i think. so running lean will cause knock, would running to rich cause it to? the extra heat from running lean causes the knock or is it something else?

thanks for the help

<small>[ August 08, 2002, 11:18 AM: Message edited by: dissonance ]</small>

NeedforSpd_Z

A lean condition can cause detonation which creates knock, which then in turn retards the timing. I have also heard that the ported MAF ends cause a lean condition on their own. what I would do is use your translator and add fuel in by adjusting both base and WOT. try doing them each individually and in small increments then record the data with ATAP or something similiar. That way you can see how much closer or how much farther away you come from correcting the lean condition and potentially the loss of timing. Hope this helps.

dissonance

i changed the WOT to 2% 1st setting (still had the same knock) i went all the way to 8% and i still had KR <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" /> , 6% seem to do the best. o2's where around .88/.89

i dont have ported maf ends, i have an 85mm maf

TrentSS

You say "8 to 12%" lean while driving. Is this at part throttle or WOT? Since you have your Base setting and WOT setting at 0, I would try richening up the "WOT" setting only. Your L-trims at idle are just fine. I too usually read 0 to -2% at idle. I occasionally see up to 3.3 degrees (it's rare but it does happen) @ WOT. I would be more worked up about it if you were seeing like 4+ degrees ALL the time.

NeedforSpd_Z

Ok correct me if I am wrong but doesnt the 02 Z06 85mm MAF come without the screen? I also thought those come with or without calibration. Also what year is your car? What were your number differences in KR when you changed from 2%-6%?

dissonance

I have a 98 z28 with (stock) 3.23's
The 2002 z06 maf comes with no screen. I got it from ls1speed

I have the WOT set to 8% right now. Seems to help but it was a cool morning. I gave it about 50+ throttle then at about 50 I floored it and it really felt like it was going to brake lose all the way to about 80. I looked at the KR and it did not go much over 1.5% it was cool this morning. the coolent temp was around 178 to 180
i did not get a took at my o2's but last night they where .9 with the WOT set to 8%

I would think 8% is way to rich, these car are rich from the start at WOT

Thank for the help guys I really think I am getting some where with this

<small>[ August 08, 2002, 11:14 AM: Message edited by: dissonance ]</small>

NeedforSpd_Z

Ok thats what I thought. Well 1.5% isnt making progress I assume. If you have leaned the car out with the mods you have what you are doing is compensating for with the MAFT for the fuel that you lost. lets say for example your car likes 12.0-1, lets say with the mods you have the car has been leaned out to say 13.0-1(just an example) So what you are trying to do is get that AF back to the 12.0-1 that it likes, so lets say you added 8% and that got you back to the 12.0-1 you car likes. So your not over-richening the car your compensating for the fuel lost. Actually let me clarify this, your not losing fuel your just adding more air in. Lid,MAF flow more air over stock components, So the car is still adding the same ammount of fuel but more air is coming into the mixture so that is where the car leans out. If you really want to see exactly where you are get onto a wideband dyno and set WOT back to zero, then see what your AF is. Then add a little at a time and see how that helps your car out. Remember its better to be a little bit rich than a little bit lean IMHO. Hope this helps! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

dissonance

The intake mods I have would lean it out a lot, but I think the slp loudmouth would really lean me out +the cats being gone.

I will try to make the WOT little richer when I go home, to the nest setting 10%.

I hope it was not jus the air temp that is making the difference. 8 to 10% seems like a lot to add for WOT. I am willing to try it to fix this problem
I am still working on find some race fuel

parish8

iTrader: (6)

you can buy zylene alot of places, it is a paint thinner. wait untill you are down to 5 gallons of gas or so and then add 2 gallons of zylene to your tank, i dumped it into a gas can and then into the tank to keep from spilling it. at that ratio 5gal of 92 and 2gal of zylene you should be around 99octane.

some guys like to scoff at dumping paint thinner into your tank but lots of FI guys run it, some guys buy it by the 50gal drum and add like 5gal/tank.

dissonance

Could I get it at Wal-Mart or another large store?

GODUCKS

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by McRat:
<strong>go to www.76.com and station locator.

find stations that sell race gas. It's 100 unleaded at the pump. go 50/50 should be plenty.

Are you too lean at WOT?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The only 76 that sells race gas around here is 110 leaded race fuel.. If i mixed some of this would it hurt my motor?

2MCHPWR

iTrader: (10)

sounds like you are making progress. cool.
if you can, try a stock unported MAF meter and monitor the results. it might help. at your hp level, you do not need a bigger than stock MAF meter. the numbers in my sig are with stock untouched meter with screen. good luck.

McRat

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by GODUCKS:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by McRat:
<strong>go to www.76.com and station locator.

find stations that sell race gas. It's 100 unleaded at the pump. go 50/50 should be plenty.

Are you too lean at WOT?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The only 76 that sells race gas around here is 110 leaded race fuel.. If i mixed some of this would it hurt my motor?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes. Don't run leaded, it will "blind" your O2's and your car will run like crap.