just loaded the 93 performance tune last night and im getting 2.5 knk around 4500 rpms in 3rd and 6knk about the same rpms in 4th. i have a wideband on the way but it wont be here til next weekend. is there anything i can do? ill post the log if i can figure out how. meanwhile i can answer any questions about it.
any help appreciated its my daily driver but i have a backup ride. i just like going fast
btw: i could hear it coming from the engine at 6 knk in 4th and i lifted immediately and went back home real easy
__________________
I want to see the crash test results of a Bugatti Veyron
MODS: a chrome exhaust tip
Last edited by pmurcyard : 10-30-2009 at 02:12 PM.
that^^^^^ one is after the tune its kinda long but there was traffic... at 2am
anyway this is my very first shot at DSP there was a very noticable sound coming from the motor at 6knk like a mild backfiring for like 1 second before i lifted. car was pulling like crazy.
they are only good for 10 downloads tell me when i need to re-up
I also get a ton of ST KNK from the base 93 tune and my air/fuel ratio is at 13:1. I've had to pull 3* of timing and add fuel at 4k rpm and up to make that tune useable. It sure feels fast, but it's a timebomb so I wouldn't leave the tune in there unaltered.
Good, I see you've posted the logs while I was writing my post.
Your logs look pretty good. Every other WOT pull has a max of only 2.5 Kr. we need to get it under 1.0 since you're on the 9r18 93tune(less sensitive knock settings). DMW, did you even bother to LOOK at the logs?
I see the 6Kr on that very last pull but you were only in the throttle for less than 1 sec(awfully quick), so I wouldn't freak out about that value on that pull.
Looks like 4300-4800rpm is your main problem area.
What I would do is NOT pull any timing but simply add 5% fuel to 4k-5k AND 5k-6k and retest. If knock is in the .5-1.0 range STOP!. If any where its over 1.0, add another 2.5% fuel and retest.
Last edited by duster360 : 10-30-2009 at 03:14 PM.
Since you don't have a wide band, its probably a good idea to add a little fuel, but lets see the log first.
no its all stock. I got a k&n drop in, FM mounts and a boost gauge that sits at -2. it was reading 15 the whole time no real spike that i noticed.
ive been having a sort of issue with the car kind of misfiring under boost. it feels like the boost is fluttering at WOT. some ppl say its spark blowout but ive changed plugs and wires and gapped them lower. but it was running fine gapped higher for 30k miles until one day out of the blue. so idk what it could be.
like i say wideband will be here about a week hopefully and im getting the tach adapter so i can post logs for a/f too... soon to come
oh idk if its 9r18 when i connected to my car it said update needed so i hooked it up and got the DS update thing... did that do it or is there something else to download
Last edited by pmurcyard : 10-30-2009 at 03:04 PM.
Good, I see you've posted the logs while I was writing my post.
Your logs look pretty good. Every other WOT pull has a max of only 2.5 Kr. we need to get it under 1.0 since your on the 9r18 93tune(less sensitive knock settings). DMW, did you even bother to LOOK at the logs?
I see the 6Kr on that very last pull but you were only in the throttle for less than 1 sec(awfully quick), so I wouldn't freak out about that value on that pull.
Looks like 4300-4800rpm is your main problem area.
What I would do is NOT pull any timing but simply add 5% fuel to 4k-5k AND 5k-6k and retest. If knock is in the .5-1.0 range STOP!. If any where its over 1.0, add another 2.5% fuel and retest.
thanks man for such a quick reply (and i mean lightning fast!!!)
ill add the fuel. i think that was my first time in 4th with it and as soon as the boost manifested i heard the knocking from the motor and let it off. but should i have kept on it to see if it stayed? do you think maybe the pcm would adjust or somthing? or did i do right.
also, can you tell i have the 9r18 by the log or just that i updated online?
All the info i needed was in the Logs. 9r18 is listed under "tool info" in the log. That crom version has the latest 93tune so you're good.
You're boosting 19-20psi at peak(you didn't log BARO so its just a guess +/- .5psi) so that puts quite a bit more stress on the ignition system than boosting 14psi. So the increased boost is causing the misfires (newb speak = spark blowout). A good set of plugs gapped at .030-.035 will probably fix it.
All the info i needed was in the Logs. 9r18 is listed under "tool info" in the log. That crom version has the latest 93tune so you're good.
You're boosting 19-20psi at peak(you didn't log BARO so its just a guess +/- .5psi) so that puts quite a bit more stress on the ignition system than boosting 14psi. So the increased boost is causing the misfires (newb speak = spark blowout). A good set of plugs gapped at .030-.035 will probably fix it.
can you tell me where baro is? i couldnt find it. also does the dsp just tune WOT or does it change everything even cruising settings
Its good to see that your getting the tune dialed in but what about the spark plug gap? Coil? Wires? There are lots of other things that you need to look into before you just start messing with the tune. Make sure that the basic operating parameters are in good working order before you just start messing with the tune. All you might need is a new set of plugs and a smaller gap.
thanks... i found one that says turbo baro idk what tab its under. i went for a ride just now logging turbo baro and i hit 1.5 st knk then the next i hit about 0.5 then the last 3rd gear pull was 0 so idk whats up there but i added 5% fuel 4k - 6k and the boost wasnt quite as high... spiking to 15 then dropping to 12 on the gauge so i guess a spike to about 19-20 and falling to 16-17 actually.
also to note: it was cooler last night. around 70 i think and right now its about 85
Its good to see that your getting the tune dialed in but what about the spark plug gap? Coil? Wires? There are lots of other things that you need to look into before you just start messing with the tune. Make sure that the basic operating parameters are in good working order before you just start messing with the tune. All you might need is a new set of plugs and a smaller gap.
thanks. i ordered the dsp from you. anyway ive been having the misfire prob for a while tho. its not shakey it just feels like someones bump drafting you. power fluctuates you and down... like flutters real fast. i have iridiums gapped low i dont remember how low but like i say it ran fine like that for lots of miles so i dont think thats it. i changed back to stock plugs and same thing. i have iridiums back in now. changed wires to new stock wires and still no change.
mine did the same thing that your talking about i went back into my spark settings and forgot that i was advanced 3deg of timing i pulled it to 1deg and added 2.5% more fuel and it was fixed. hope that helps. mine kinda felt like a really big gust of wind hit the car.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
93 performance 6 knk
thanks for looking
let it off. but should i have kept on it to see if it stayed? do you think maybe the pcm would adjust or somthing? or did i do right.
Linear Mode
