Help With Tuning

[91rangerturbo]

First off my scan tool is a matco hand held unit.

My Car 1984 GN

My mods are

Mease 3" Pipe
ATR Up-Pipe
Walbro 340 Hotwired
Straight 3" exhaust
Kirban Adj Fuel Reg
K&N Cone Filter
87 Ing Module and Pack
Plugs Gapped @ 35

My reading i got from it

Running at a Idle---/---Key On Not Running---/---Drive at 3325 RPM@ 39mph
4th Gear SW- OFF--/------OFF--------------/
AC Request-- OFF--/------OFF--------------/
BLM--------- 150--/------128---------------/--------128--------
CC On/Off SW- OFF/------OFF--------------/
Clear Floof--- OFF-/-------OFF-------------/
Coolant------ 203 F-/-----208 F------------/----------197
Engine Rpm ---975-/-------0----------------/---------3325
ESC Counter--4----/-------0----------------/----------79
Exhaust 02-- LEAN-/-------LEAN------------/----------RICH
High Battery-- NO--/-------NO--------------/
IAC Postition--36--/-------150--------------/-----------74
Intergrator----150-/-------128--------------/----------125
Loop Status--Closed-/-----Open-------------/----------CLOSED
02S (mV)-----173--/-------502-------------/-----------857
02S CROSSCNTS- 103-/-----0---------------/-----------84
P/N Switch----P/N--/-------P/N-------------/-----------R/DL
Prom ID-------7058-/-------7058------------/
TCC Lockup----NO--/-------NO--------------/
TCC Solenoid--Off--/--------NO--------------/
TPS Sensor (V)- 0.49-/------0.47-------------/---------1.20-----------

 

[91rangerturbo]

My car is knocking under full boost also. Stock boost on a hot air car. Running 93 octane.

 

[tenright]

this looks like your chip is locking the BLM at 128, the idle BLM at 150 is maxed caused by a lean condition. O2 mv at 170 also indicate to much airflow not enough fuel. I would say you have a pretty bad leak...either vacuume or exhaust.

T

 

[TurboDave]

I would have to agree on the bad leak, either vacuum, or pre turbo exhaust leak.

Both the BLM and INT are maxed out at 150. Very bad.

 

[tenright]

Actually I can probably point you in the right direction, the most notorious leak on these cars is the drivers side header, take a cardboard tube and listen for ticks...


T

 

[91rangerturbo]

passenger side header is leaking on the primary closest to the firewall. And i had two vacuum leaks one on the compressor housing and the other was in the boost gauge line. The car runs alot better now.