WTF am i doing wrong here. should be 12's

[psychlow]

Another couple comments on the boost leak thing:

When you're venting exhaust through a wastegate, you're slowing down the turbo since that exhaust energy is diverted to the exhaust pipe rather than spinning the turbine wheel (and the turbo itself) faster.

When you boost leak, you're spinning the turbo at a higher RPM to achieve the same pressure, since the wastegate doesn't open until the selected boost pressure is achieved.

If you're running a mass air system: when you boost leak, you're usually venting metered air. The only way this is untrue is if you're running a blow-through setup and the leak happens to be before the MAS. The engine's computer thinks you're getting x amount of air, when you're really getting x - [the amount you leaked].

 

[cfisher]

Got another update. I pretty much started all over. Reset the ECU, did a boost leak test at 20psi which held for about a minute, checked base timing again. Everything looks okay so I set my SAFC back to 0 on highs and lows and went driving. I got my lows set first which was easy. Then I put the highs at -20,-20,-22,-25,-25,-25,-25,-25 and did a couple WOT runs. Here is what I got.

RPM Timing 02 sensor
3984 10 0.96
4304 9 0.96
4660 9 0.98
5019 10 0.98
5394 11 0.98
5769 14 0.98
6101 13 0.98
6425 13 0.96
6703 12 0.96

So what I'm looking at now is the car likes running rich and I'm back to square 1. Either I get a good AFR 11:1 and shitty timing/knock or I run pig rich AFR 9:1 but get my timing somewhat decent. Any other suggestions out there?

 

[sweet97]

Ichecked your mods and missed the turbo but the sidemount IC jumped ou and you will need a decent FMIC. I have a 50 tri and tried a dejon street FMIC and could only tune to 13 psi. Switched to a small Spearco and got 18PSI tuned rough as bad weather set in here in upstate NY but I am hopeful the spearco will do the job. What turbo are you running? Man FMIC without a doubt. Mark

 

[cfisher]

It's a TDO6 20G. I am in plans of getting an SBR FMIC but I'm not thinking that is my problem right now. It's only in the 40's here and my UIP stays nice and cool even after a couple runs.

 

[sweet97]

Keeping the air cool is one function of the IC. That sidemount CANNOT flow the output of the 06 20g. You can tune for what your mas sees but if it cannot pass enough through the IC you are limiting the potential of the 20g. Let us know when the FMIC is in, still my guess! Mark

 

[Vinnie]

This is the problem with most people, they want to go big, without the supporting mods.
When they see the times they they are getting, they get disappointed.
You need a front mount for the size of that turbo, 17 psi it's like running 5 psi on a 14b, you should be running over 20psi to get the best out of that turbo, of course with a front mount.
When it comes to tunning, you need an EGT gauge, you should be getting 1600-1700F by the end of the 3rd gear.
2g cars don't wast your time tunning with the O2 sensor they are NOT ACCURATE, at all.
Tune only by timming and EGT.
I'm proof of that......
I'm running a Big 16g, 550's, stock side mount, SAFC to control fuel.
Kept tunning for 02 sensors around .92-.94 was getting bad time 13.7 was my best time, my plugs were always black.
I give up tunning with 02 sesor numbers, went for EGT and timing.
End of 3rd gear my EGT's are 1600F and my timing from 3300rpm starts at 11 by 7200rpm the timing is 17, took a look at the plugs, they are perfect, my best time 13.2.
My 02 readings are exactly 1.02.
what does that tell you???? Don't wast your time looking at 02 readings.
Any feed back is welcome

 

[cfisher]

Dude, the only supporting mod I really don't have is the FMIC. I'm not going off o2's to tune with, I tune with a wideband/datalogger/SAFC. I only have the o2's on the logger to give me a better idea if knock is accuring. I have been tuning off timing/AFR the whole time. Have you used a wideband to see what AFR you are running on that 1.02 at WOT?

 

[sweet97]

I'm cnfused. Isn't a higher 02 reading ricer? How could going to a 1.02 have the plugs look better?

 

[Coup D E'Tat]

I'm cnfused. Isn't a higher 02 reading ricer? How could going to a 1.02 have the plugs look better?

Because it's a narrowband O2, and should not be used to tune with anyways.

 

[Vinnie]

Based on these redings that you have:
RPM Timing 02 sensor
3984 10 0.96
4304 9 0.96
4660 9 0.98
5019 10 0.98
5394 11 0.98
5769 14 0.98
6101 13 0.98
6425 13 0.96
6703 12 0.96
I would say that you are knocking after 5700rpm,. try and give it more fuel to see what happens.
These are my readings, not tunning with 02, these are 3rd gear on the drag strip:
5444, 13, 1.02
5952, 14, 1.02
6160, 15, 1.02
6584, 16, 1.02
6760, 16, 1.02
7032, 17, 1.02
in my opinion you should be looking for something like that, forget about 02 readings for awhile and tune for timing to see what happens.
Remember.... I was doing the same you are doing, tuning for O2, than I started tuning for timing, and EGT, that's what I got.

 

[cfisher]

I run into fuel cut if I try to richen it up anymore. The lowest I can go is -25 on the SAFC before the fuel cut kicks in. This is at 18psi. I'm going to go ahead and get the SBR FMIC and see if it helps. If not I'll get rid of the SAFC/logger and go with DSMLINK.

 

[Eclipse Rogue]

go with DSMLINK.

Is the best thing you could do...