1st log after RS49T install, need to start tuning.

[PSIcho]

I just finished installing my RS49T, DNP exhaust, internal gate and O2 housing a couple of days ago and after breaking it in did my first pull. I'm running 17-18Lbs boost, 43lbs AFPR, 255 Walbro, PTE 680, JR FMIC short routed and -34 (HI )across the board on SAFC. So far, it doesn't seem that much stronger than my stock turbo at 16lbs (or maybe cuz its comes on pretty smooth) but I'm sure thats because I'm running too rich. Am I? But it does keep pulling well above 5K mark unlike the stocker. Also, I don't have too much room to run the car so I didn't get to go to high of an RPM in 3rd gear. It seems like I need to lean it out to -38 on the next run. What do you guys think? THX.

RPM O2 Timing
3328 .03 28
3388 .05 24
3496 .03 25
3628 .03 17
3792 .05 6
3968 .05 3
4132 .05 4
4292 .05 5
4416 .05 7
4592 .05 7
4700 .05 7
4836 .05 8
4972 .05 8
5096 .03 10
5260 .05 10
5400 .03 9
5524 .05 10
5644 .05 11
5748 .03 12
5888 .05 12
6028 .05 13
6092 .05 13

 

[Mellon]

.05 02's is practially no fuel at all.. I hope that's wrong or you'll be buying pistons very soon.

maybe it's a bad 02 sensor or it's unplugged.

 

[PSIcho]

Mellon great catch!!! I forgot to reconnect the O2 sensor and I thought I was reading those as 1.01v. So, did another run under the same condition above. So, it does seem that its still a little bit rich probably around 2%. What you guys think?

RPM O2 Timing

3084 .25 30
3088 .85 27
3116 .01 26
3176 .03 25
3268 .21 19
3340 .81 16
3452 .89 9
3520 .93 5
3652 .95 4
3772 .95 5
3892 .97 5
4004 .97 6
4112 .97 6
4276 .95 9
4360 .97 7
4504 .97 9
4592 .97 8
4740 .97 10
4836 .97 9
4992 .97 11
5076 .97 11
5188 .97 11
5324 .97 10
5468 .97 11
5572 .97 11
5696 .97 13
5780 .97 13
5888 .97 14
6028 .97 13

 

[CanadianTSi]

Seems rich, but your timing blows, no wonder the car feels slow.

 

[PSIcho]

Did another run, this one with -36 across the board. What do you guys think? I'm confused by the O2 readings between 2k thru 3116, seems obscenely low. Should I add fuel in that range? Overall, still pretty low timing.

2228 .81 26
2216 .01 28
2296 .01 28
2352 .01 27
2408 .01 27
2464 .01 27
2532 .01 27
2600 .01 27
2660 .01 27
2740 .01 27
2784 .01 26
2860 .01 25
2938 .03 25
3000 .03 19
3116 .07 17
3216 .83 14
3320 .87 11
3416 .87 8
3580 .93 4
3680 .95 3
3836 .95 3
3972 .95 4
4144 .95 6
4300 .95 6
4468 .95 7
4596 .95 7
4768 .95 7
4896 .95 8
5052 .95 9
5188 .95 11
5368 .95 9
5492 .95 9
5620 .97 10
5728 .95 12
5832 .97 12
6016 .95 13
6092 .97 13

 

[v8s_are_slow]

how bout putting up some knock numbers? could be knocking bad and we wouldn't know it. but looking at the timing, i wouldn't doubt it.

 

[spyderturbo007]

You can't log knock on a 2g without DSMLink.

Also, if your O2 is dead, it's not going to effect WOT performance. It will. however, kill your gas mileage at cruise/idle.


Post another log adding in airflow.

Canadian is right, your timing is pretty low when the boost comes on. I am running 650's and only drop to about 8 or 9 degrees. Unless it's really hot out, then it may go to 6.

 

[CanadianTSi]

You have some other issure going on, o2's indicate rich but then your timing is just terrible.

Have you done a boost leak test lately??

PS don't get discouraged you would be surprised what going from 13 to 19 degree's of timing feels like, once you get everything figured out she'll feel like a beast

 

[v8s_are_slow]

You can't log knock on a 2g without DSMLink.

Also, if your O2 is dead, it's not going to effect WOT performance. It will. however, kill your gas mileage at cruise/idle.


Post another log adding in airflow.

Canadian is right, your timing is pretty low when the boost comes on. I am running 650's and only drop to about 8 or 9 degrees. Unless it's really hot out, then it may go to 6.

my bad, i didn't notice it was a 2g

 

[Turbo Monk3y]

You have some other issure going on, o2's indicate rich but then your timing is just terrible.

Have you done a boost leak test lately??

PS don't get discouraged you would be surprised what going from 13 to 19 degree's of timing feels like, once you get everything figured out she'll feel like a beast

Wow i can't run 19 degrees on pump at 20 psi otherwise i get knock... Im running about 13 degrees at the top of my gear with my 60-1... On the track i run 18-19degrees @ 25psi and i get consisten 12.3s @ 114mph still is slow for my setup if you ask me... Still cant figure out whats wrong even with dsmlink

 

[v8s_are_slow]

what about if ya turn the boost down some? and why don't ya try using a wideband? those a/f readings don't look bad. but remember, every car is different.

 

[PSIcho]

Last try before heading the dyno meet, I hope. Damn, this is pathetic. This is after I set my base timing to 5 degrees (1G CAS) and richen 1k-3k to -26 then -36 3600-5600 then -37 on the rest up.

RPM--------O2-------Timing----Air Flow

3440_____.09_____33_____2.19
3448_____.71_____26_____6.08
3612_____.91_____18_____8.95
3808_____.95_____ 5______12.88
4100_____.97_____6______13.89
4412_____.97_____6______14.14
4692_____.95_____6______14.97
4960_____.95_____7______15.52
5196_____.97_____6______16.21
5400_____.97_____7______16.48
5604_____.95_____9______16.77
5808_____.97_____9______17.17
5980_____.97_____10_____17.38
6132_____.97_____11_____17.52
6272_____.97_____25_____8.49

 

[v8s_are_slow]

what boost are you running? what octane? also too, you're running bigger injectors and the dead time isn't being compensated for. i had that same problem and had lots of knock. got a dsmchip and it was gone.

 

[1fastlaser]

check for intercooler pipe leaks,and such,definatly seems like that

 

[PSIcho]

what boost are you running? what octane? also too, you're running bigger injectors and the dead time isn't being compensated for. i had that same problem and had lots of knock. got a dsmchip and it was gone.

Runnin 17-18 lbs boost on 91 pump gas. What do you mean by dead time isn't being compensated for? I'm really hoping to get DSM link but thats probably another 2-3 months from now.

 

[dnhieu]

okay im going ot feel really dumb for saying this but isnt .97 rich as hell? if thats the fact hes getting rich knock like crazy and its pulling timing. also a boost leak will make you run rich as hell

 

[v8s_are_slow]

What is "deadtime"?
Larger injectors usually take longer to open, and the lower rpm's/pulsewidths will be too lean if this is not corrected for. I add an appropriate amount of "deadtime" or injector "risetime" to the factory defaults to make this adjustment. BTW, this map in the ECU is battery voltage based, as lower battery voltage also slows the injectors down.

not saying saying this is even your problem. but listing all possibilites to try and help ya out. and yes, being too rich can cause knock as well.

www.dsmchips.com just incase ya wanted to check them out. not a bad price at all.

 

[PSIcho]

BTW, I may start trying this today, goin richer. Looking back it seems that I was better off, timing wise and butt feel wise, when I was at -34 that at -36-37. I'm thinking that my timing may be getting pulled due to running lean that it'll actually result in a rich O2 reading. I just don't think that running close to -40 is ideal.

 

[CanadianTSi]

I would try 1 log at -40 from 3.6k on up and see what it looks like.

You positive you have no boost leaks?

 

[badgsx]

They make 95-99 generation eprom chips now? Did I read that right from the dsmchips site. So you no longer need to find a 95 chip?

 

[PSIcho]

I would try 1 log at -40 from 3.6k on up and see what it looks like.

You positive you have no boost leaks?

Did a few more logs and it still sucks. I think you may be right that there must be a boost leak somewhere so I went to Home Depot and picked up the stuff I need to make a tester so we'll see. I just hope that its not the Full Throttle AFPR thats causing all this.

 

[Terrorize]

i have an awd dyno(awd), and im in cali too. wanna do some tuning? call my shop 661 947 1105--

 

[PSIcho]

Terrorize, I tried goin to the Dyno meet a couple of weeks ago but the heat stopped me halfway over, I'll try again next time.

Anyway, I discovered a huge boost leak at the throttle body, I guess I've been running the car almost a year with the O-ring missing on the ISC motor, it wasn't even a leak it was a breeze coming out of it.

So, this latest log looks a bit better. I just wonder if I can start with dialing up the lower RPMs which seems to start off at kinda low. What you guys think?

-31 Set across the board, running 19-20lbs boost.

RPM ______O2 _____Timing

3560 _____.07 _____ 33
3544 _____.09 _____ 26
3592 _____.05 _____ 25
3764 _____.85 _____ 11
3948 _____.93 _____ 5
4184 _____.95 _____ 5
4412 _____.95 _____ 6
4636 _____.95 _____ 7
4852 _____.95 _____ 7
5036 _____.95 _____ 9
5200 _____.95 _____ 10
5392 _____.95 _____ 11
5500 _____.95 _____ 12
5652 _____.95 _____ 14
5756 _____.97 _____ 13
5960 _____.95 _____ 13
6056 _____.95 _____ 14
6172 _____.95 _____ 14
6304 _____.95 _____ 16
6432 _____.85 _____ 32

 

[SilverMitsu]

wow, from 4-6300rpm your car runs BEAUTIFUL...look at that timing...NICE

 

[PSIcho]

-31 across the board, 91 octane, 18-19lbs, outside temp 70's. Do you guys think I need to adjust the 2-36k to probably -27? Any other advice. Waiting to fix my clutch before doin a dyno run.


2488 ____.01 ____ 26
2596 ____.01 ____ 25
2704 ____.01 ____ 24
2864 ____.03____ 23
2992 ____.68 ____ 17
3132 ____.85 ____ 13
3312 ____.89 ____ 8
3452 ____.93 ____ 5
3604 ____.93 ____ 4
3796 ____.95 ____ 4
3992 ____.95 ____ 5
4164 ____.95 ____ 5
4332 ____.95 ____ 6
4504 ____.95 ____ 7
4716 ____.95 ____ 6
4864 ____.95 ____ 6
5064 ____.95 ____ 7
5188 ____.95 ____ 8
5376 ____.95 ____ 8
5524 ____.95 ____ 10
5628 ____.95 ____ 11
5772 ____.95 ____ 12
5924 ____.95 ____ 12
6064 ____.95 ____ 14
6252 ____.95 ____ 13
6304 ____.95 ____ 15
6440 ____.95 ____ 15
6584 ____.95 ____ 15