scanmaster 2 questions

[91syclone]

ok my buddy has a 87 national here are the mods:
206/206 flat tappet cam
009 injectors 42.5
port and polish heads
vigalantie converter 3200-3400 stall
t44 turbo
3 inch downpipe
headers
fuel pump relay upgrade

I have been doing some searching about what is the "ideal" numbers to have on the scanmaster2. here are the number that he has at idle
50lbs vaccumm off -------- 43lbs vaccumm off
O2 - 380-550 ---------- 437
KR - 0 ----------------- 0
AF 5 -------- 4
L8 32-34 ------- 28-30
INT 124-134 --------- 128
BL 116 ------------ 151
ATS 108 ---------------- 93
R 750 ------------------ 925
IAC 55 -------------- 56
CC 240 ------------- 230

42lbs vac off --------- 48 lbs vac off
O2 445 ------------- 429
AF 4 -------------- 4
L8 28-29 -------------- 29-30
INT 128 --------------- 128
BL 154 --------------- 160
ATS 94 ----------------- 94
R 875 ------------------ 875
TPS .48 ---------------- .48 - .50
IAC 54 ------------------ 54
CC 231 --------------------- 228

45lbs vac off
O2 437-445
AF 4
L8 28-30
INT 128
BL 160
ATS 93
R 875
TPS .48
IAC 57
CC 240


From what I have found the O2's are low, I messed with the fuel pressure as you can see but they would never go up to what I have seen to be right at 492-600.
But at 19lbs of boost 0 KR the O2's are at 775.

The AF is OK

L8 is way low. How do I fix this?

INT are to high but i dont know if that is ok or not. How do I fix this?

BL is I think is to high I dont know. How do I fix this if wrong?

ATS is ok

IAC is is to high. I tried to adjust the throttle screw but it went anywhere from 54 - 66. DO I need to pull it out and turn it down?

TPS is high. I know how to fix that.

CC seems to be fine.

Any help with the stuff would be much appreciated. I feel that the car has much more potental than it is showing now. The best at the strip was a 12.8. THe brakes need some work because when you try to tork it up as soon as it starts to build a pound of boost it blows the tires off. This was on 22lbs. The chip he has in the car is made by Quad Air INC. I have never heard of them and suspect this to be a big problem with the car. The chip is set up for the injectors. On my syclone I had to have a chip made for the injectors, turbo, cam, and head work. Is this how these cars are? If so I think that would be a problem. What chip should he go with in the car? He is going to order the MAF Translator this week as well.

Thanks For Any Help

James

 

[rob nolan]

The Quad Air chip is made by Red Armstrong. I run his chips and alot of people run his chip also with no problems. The chip has to be made for the injectors. If the chip is made for the injectors i doubt if there is anything wrong with the chip. Start the fuel pressure at 43psi and work from there. If your buddy ran with 19psi of boost at 0 knock and the O2s are at 775 at WOT that is fine. With the IAC you make little adjustments at a time shoot between 10 to 20. The TPS should be around .38 to .42.

 

[scottyb]

You might want to get a few baselines done and then post the numbers again.

- The TPS is out of "idle", therefore some of the numbers aren't baseline. Get the TPS in the range of .38 - .44. Then get the IAC in the range of 10-30, hot idle, park, no AC.

Everything else may change once you get the TPS corrected.

- The O2's are a WOT only tuning tool. All other times, the O2's are bouncing because the ECM is adjusting rich-lean constantly. The WOT of 775 isn't bad. Some may consider that a bit low, but I wouldn't sweat it - watch the knock.

- Double check for vac leaks and air leaks between the MAF and the turbo. The MAF of 4 is pushing the low end.

- Watch the CC's during a cruise. They should climb to 255 and reset to 0, and keep cycling. This shows that the O2 is working. They relax at idle and climb slowly.

- FPR set to 43 to 45 line off and go from there.

 

[91syclone]

ok thanks guys I will reset the tps and the iac tonight and then put the new numbers down.

Thanks

James

 

[91syclone]

Ok i went and adjusted everything from the fuel pressure, TPS, and put a new IAC in the car tonight. To not get knock I put the fuel pressure up to 58lbs, the TPS is set at .42, and I had the IAC set at 19, but for some reason after driving around for about 25 min it went back up to 55. Why would it do that?? So that has me stumped. But here are the new numbers for the car.


O2 450
AF 4
L8 29 - 30
INT 128
BL 134
ATS 97
R 875
TPS .42
IAC 50
CC 0 - 230

he car seems to run alot better know but I just dont understand why the IAC would go back the that. Also could some one please explain to me what exactly L8, INT, and BL are or do. I am not real clear on those.

Thanks for your help

James

 

[Swede2]

BLM shall be close to 128 so 134 is rather ok to me.

BLM has to do with how much the ECM puts or take fuel away from the car.

If BL is over 128 it means it try to add fuel cause it thinks it going lean. If the bl is like 150 it can indicate that you have a vacumm leak somewhere.

Daniel