V6 to V8 swap, TBIChips.com Harris Memcal compatabilty?

[Woods]

To be serious here, I figure my options are.

#1 Keep the current memcal and install the 4k knock sensor. Then hope the knock sensor circuit is working and move on with a half assed setup and keep tuning.

#2 Seek out a proper memcal to use with my application, and do this right. If that is the route, I’m going to need lots of help and advise here.

#3 Wire in an external ESC, repin to new connection plugs, and fork out the $ and install an EBL Flash unit. Should be able to recover some $ by selling my current 16197427 PCM with the Ostrich 2.0 already installed, I would think?

If anyone has opinions, please feel free to share.

[Nasty-Z]

To be serious here, I figure my options are.

#1 Keep the current memcal and install the 4k knock sensor. Then hope the knock sensor circuit is working and move on with a half ass original bin and keep tuning.

#2 Seek out a proper memcal to use with my application. If that is the route, I’m going to need lots of help and advise here.

#3 Wire in an external ESC, repin to new connection plugs, and fork out the $ and install an EBL Flash unit. Should be able to recover some $ by selling my current 16197427 PCM with the Ostrich 2.0 already installed, I would think?

If anyone has opinions, please feel free to share.

I would simply keep the '7427 you already have.

Have you tried a 3.9K ohm Knock sensor with your current setup ?

I would purchase a new 3.9K ohm sensor , set the flag for KS error and go from there , my guess is unless the knock filter in the memcal was tampered with it will solve your problems.

IIRC , the original 4.3 used dual Knock sensors , two sensors totalling to the 3.9K ohms required by the P4 PCM. I believe the single 3.9K ohm sensors listed above will replace the dual sensors . Don't quote me on that , it has been a while since I messed with a 4.3 setup.

TOM

[RobertISaar]

GM states 8.2K each for the dual sensor 4.3.

[EagleMark]

I thought the 2 tied to same wire? Hmmmm... ?

[RobertISaar]

the diagram i'm seeing shows them exactly as such.



measuring them without the wire hooked up to them(either in-block or on a bench/etc), should see about 8.2K on each of them. when both are connected, combined parallel resistance should measure around 4.1K.

[EagleMark]

So they are, once again, a differant knock sensor?

There's also this in the $OD thread:

Dual vs single knock sensors:

V8 apps use single sensor. 4.3 V6 uses dual sensors wired in parallel. Code 43 will set if voltage on KS line is incorrect. Dual sensors can be used on V8 or single on V6 by changing max voltage parameter to set code 43.

Single Sensor
; ERROR 43
; KNOCK SYSTEM FAIL
;---------------------
L4E6A: FCB $A0 160 ; 16 SEC'S. HI VOLTS CK PERIOD
L4E6B FCB $E6 230 ; 4.5 VDC A/D UPPER VOLTS LMT
L4E6C FCB $14 20 ; 0.390 VDC A/D LOWER VOLT LMT

Dual sensors:

L4E6A: FCB $A0 160 ; 16 SEC'S. HI VOLTS CK PERIOD
L4E6B FCB $A2 162 ; 3.17 VDC A/D UPPER VOLTS LMT
L4E6C FCB $14 20 ; 0.390 VDC A/D LOWER VOLT LMT

[Woods]

Thanks guys, I did not mean this to be a thread about which sensor fits which application. My PCM requires a 3.9 knock sensor, did the research, got it. That is not the issue. Will my current memcal be the best way to proceed is my question?