not happy with performance

[92awdbird]

so i got a bunch of mods and did some tuning but get a bunch of knock. not able to show a log yet but i can say

that im getting knock at 15 psi in second gear. full boost is 20 psi because ofcreep. been thinking of water/meth

injection. would this be the way to solve the problem? getting about 14 counts of knock. another

idea was to use a intake sock to keep the final intaketemp down. it sucks that i got this car that's capible

of good times but it sucks i cant use it to its full potential. i had this problem for a while and have asked a bunch

of questions on full throttle network but with no log its kinda pointless. just thought of this also....i haven't

changed the fuel filter for 60k. would that be a problem? i hope i posted this in the correct spot. thanks for the

help!

 

[brian9397gsx]

If there's that much oil in the intercooler to cause efficiency problems then he has bigger issues to worry about. Have you checked the condition of your knock sensor yet? Every 1g I've owned (4 so far) they all were leaking goo and needed replaced.

This

 

[Chill Kill Kult]

was just saying. it was a long shot of having oil built up in the intercooler. it's not like it happens overnight and this site does have 20 year old cars on it. I'd have no idea when the upgrade was made to a larger IC. the turbo uses oil for lubrication, on old turbo's some of that oil (vapor) makes it's way into the intake air and the IC is (usually) at the lowest point of the intake tubing. I've had old supra's several GM's a couple hondas and even a few fords, this is my first mitsubishi or mopar product, If it's a knock sensor that blows out on 1G's like a FPR on GM quad 4's then so be it, just watch the tone.

 

[onefast2gdsm]

Are you sure your base timing is correct? I was getting 12 degrees of knock in 3rd gear, turned out my timing was off one tooth.

 

[92awdbird]

that would be something to check. i do think that did the correct setting on the gear. it would be something to check but i added 2% fuel on the high load setting on the maft gen 2 and it was a lot better. not much knock at all but i should look into the timing. its been a while ...i need to look in the manual again. after that reset the timing at a 5* base.what about the tightness of the knock sensor? you think that might be an issue? i might have made it too tight now that i think of it.....this was an idea that a friend had brought up after he was combating the same issue.would that be something to check as i had replaced it kinda recently.

 

[Dert]

I'm willing to bet that it's all in the tune. I'm running 25 psi on a 57 trim with a 190 pump with 650cc fic's running at 70%IDC. Generally tuning with pump gas ends up being alot less timing and more boost to make power. What are you running for timing?? I had to lower my timing values as low as 6 and 7 to eliminate the knock under full boost running 94 octane. Im also tuning with link though. I bet if you back your timing off and turn your boost up you can get alot more out of it. Go back an check your timing maps, I bet they are too aggressive for pump gas.

 

[92awdbird]

yeah its agressive timing maps form jeff at dsm chips. i thought we all need to run a base timing of 5* all the time no matter what set up?

 

[H@xtGSX]

yeah its agressive timing maps form jeff at dsm chips. i thought we all need to run a base timing of 5* all the time no matter what set up?

My base timing is 1.5 degrees btdc. I have a 1g CAS. Between my SAFC and the pot mod I used to counter the p0300 problems with swapping a 1g CAS to a 2g head, my timing was way too far advanced and was knocking like crazy. 1g CAS let me back it off. So no, 5 degrees btdc is not set in stone. The ecu will read the timing map the same way regardless, so if your off one way or another, change it.

 

[Black-Out]

Not for nothing there O.P. but whats the heat range on your spark plugs? If the heat range is pretty warm and your ignition timing is aggressive then your gonna ping every time the engine sees boost on 92......a larger fuel pump would definitely help along with an adjustable RRFPR but if your plugs are too warm a heat range you'll be struggling with ping the entire time you try to tune. Try dropping down a couple ranges cooler and peel a couple degrees of timing off your ignition mapping and that should get rid of any knock/ping you may be experiancing right now.....

William-

 

[92awdbird]

first of all i have adjusted the fpr to 45 psi and am running br7es plugs. right now they are cracking down on loud exhaust's so i had to install the baffle for now and now i cant get much more then 13psi now. need to adj the ebc and start over again. ill try cutting back on the timing and see how it goes. ill keep you posted on the tune!

 

[Dert]

I am running stock timing, the only timing adjustments I ever made is on the time DA table in link, and that I had to back all the way off to 5 or 6 from the 16 or so it started at to get rid of knock and crank up the boost.

 

[92awdbird]

16*base timing? im looking for base timing settings that would work well to combat knock. thanks!

 

[Dert]

No my base timing is set at stock, I'm talking about looking at my timing in the DA table on link. I can view what timing I am running at any rpm, and match exactly what point I am knocking and see what cells I am using for timing, then back off that cell 1 or 2 degrees, but in some cases it needs to back off alot. I am suggesting the same case is with your car, the timing your ecu is using at whatever point you are knocking needs to be backed off...basically you need a tune...

 

[92awdbird]

i c what your saying but its all in the ecm. i dont have dsm link like you have so its hard to combat the knock at the moment. this seems to be a job for meth/water injection. ill have to take a few pictures of the data log so i can sow you guys whats going on. it sucks to have an old school setup so to say comaped to you guys with the sweet setups. right now im running some BG 44k injector and top end cleaned through her to see if i got a clogged injector. i hope it helps if not its not a bad thing to do anyway.would it be a good idea to retard some base timing some 2 deg or so?

 

[Dert]

That or back your boost off, your best bet tho would be to get some sort of tuning software, then you can advance your base timing, and do a bunch of pulls and if you get knock, adjust the timing in the cell the ecu is using when it knocked. That's the problem about just getting a chip, ya they can get base maps from what mod list you give them but there is no way to fine tune, as when the chip is burned there is no way to know for sure how the car is going to take to the data the chip sends. Save some $$ and pick up v3 lite, you'll be glad you did.

 

[92awdbird]

i guess its the cx racing intercooler i got is a big frying pan that i mounted as in intercooler. so next step is a treadstone TRV185 witch is good for 750ph as they stay. sounds like a plan!!!! damn heat soak got me down. i love the good news!!! but the price is the problem. anyone know of a intercooler that would work well like this one i need for my pipeing setup?

 

[MichaelSuch]

The CXRacing intercooler is the same as the Punishment intercooler I believe. Both have inlets on the back side of the intercooler. Check out ETS intercooler cores. But are you positive it is heat soak? Theres people that have ran 16g's at 15psi on the factory side mount without knock for the first pull or two. Have you verified that you have a good non-leaking knock sensor yet?

 

[92awdbird]

knock sensor was replaced about a year ago and recently inspected. the intercooler i have is the cx racing vertical flow. i got a treadstone trv1859 on the way along with some radiant heat barrier for the cool side of the ic piping. this shoulddo the trick as soon as its installed and retuned. ill keep you guys posted on the tune and install with some pics

 

[jed344]

Need some kind of log to get an idea what the car is doing... But that is ALOT of knock usually to pull that much you have to be running ALOT of timing or running lean.

 

[tsd123]

I don't understand why you would have a problem at 15psi. Have you verified it isn't the knock sensor? I used to have a bad one on mine, and it was aggravating. After I fixed it there is no knock.

 

[92awdbird]

its proven that the intercooler i am using is a pos! so to take care of that my trv1859 is in the mail. after that i will get a meth/water injection setup. then i will do my final tune and take her to the track. ill keep everyone posted with the results but im sure the intercooler is the problem for most of this knock.

i changed my knock sensor about 8 months ago with a napa brand. that might be the reason but i have had ok results with there knock off kinda style but its always in the back of my mind that that sensor is a pos also. if i do this and still have problems ill get a oem knock sensor to get that out of the way.

 

[92awdbird]

so i got a buddy thats bringing a timing light to work tomorrow and ill set the base timing at 5 deg btdc. from there ill start with the tuning. hes got a wrx that i went in a ride in the other day. one word....slow. ill show him why he should have bought a dsm. ill keep you posted.

 

[Bojangles465]

do you have a wide band? post some of your info like your a/f ratio, and also some logs if you have them