Tuning data

[GNBeswick]

Hey guys, just converted my ecm and everything over to the 87 style today, and installed Scanmaster. Now Ive got all this data, and Im at a little loss with it. Does anyone happen to have a general guideline of good readings for everything? Like 02 voltage and that stuff?

 

[edchapman]

1 ECM Sensor Readings
2 Description Idle Values WOT Values
3 O2 Voltage (.45 +/- .10) (.76 - .80)
4 O2 Cross Counts (10-20)
5 TPS (.36 - .44) (4.50 - 4.90)
6 MAF (4 - 7) (255)
7 INT (118 - 138) (128)
8 BLM (118 - 138)
9 LV8 (30 - 40) (255)
10 IAC (10 - 50) (~100)
11 Knock Retard (0) (< 6)

bye, Ed
http://edchapman.tripod.com/cars.html --------- runner up B-5 GS nats 2004
84 T-Type WH1 15.4@89 stock, 87 T 14.1@97 stock, 87 GN stock 3999/400 points

 

[GNBeswick]

My 02 volts jump around alot, is that bad? They go from about 560 at idle to 889, then they jump around alot to numbers like 250, 360, 720 and stuff, high 800s seem to be the most consistant number though. Car seems to knock alot more now after the conversion too....I dont get it, cant even put my foot in it without me hearing knock and feeling the car slow down after each knock. I didnt change anything, and the chip im using has the same parameters as the one I had in my 85 ecm.

 

[Mr.Buick]

knock retard

Check to make sure that something isn't hitting somewhere, like exhaust pipes, which gives false knock to sensor. If you are just driving along, does your scanmaster indicate knocks? The O2 sensor will always jump around during drive. The only thing you want to watch is the O2 reading under full throttle. It should stay 750 - 800, if lower than 750 you will need to either add fuel or reduce boost.

 

[Wagondraggin]

ARE YOU USING A 86/87 MASS AIR FLOW SENSOR?

 

[GNBeswick]

Yes I am....but I am wondering if it is bad, as my highest MAF reading is 177.

 

[Wagondraggin]

sounds to me like that is your problem try your 85 maf.. see if it helps