Anyone care to guess... - Page 2 - ZR-1 Net Registry Forums

VetteVet · 02-15-2013

Oh, I almost forgot. Built in transmission controller with the ability to handle most of the GM electronic transmissions out there.

PCM with your tune burned in can be had for about $110.00.

XfireZ51 · 02-15-2013

Jep,

Good luck. This would be cool. Let me know if I can help.

GOLDCYLON · 02-15-2013

Wow just wow. This is the way forward. OBD2 ='s bluetooth wireless scanning and tuning on the fly capabilities as possibilities reguardless of the platform.

GL Jep !!!!!

alwayscode390 · 02-15-2013

Quote:

Originally Posted by VetteVet

PCM with your tune burned in can be had for about $110.00.

It would be a direct replacement for the obd1 computers wiring and everything? ---

XfireZ51 · 02-15-2013

Quote:

Originally Posted by alwayscode390

It would be a direct replacement for the obd1 computers wiring and everything? ---

Nothing is a "direct replacement" other than another OEM ECM. You need to re-pin and "translate" your current calibration into the
parameters used by the LSx PCM. For stock motors that could be done and copied for other stock motors. Otrherwise each is a custom tune.
Having said that, thank you Jep for blazing the trail.

alwayscode390 · 02-15-2013

The chip/ tune part you mentioned makes sense... but I wasn't sure about the actual wiring harness from the computer to the engine. ---

VetteVet · 02-15-2013

Quote:

Originally Posted by XfireZ51

Nothing is a "direct replacement" other than another OEM ECM. You need to re-pin and "translate" your current calibration into the
parameters used by the LSx PCM. For stock motors that could be done and copied for other stock motors. Otrherwise each is a custom tune.
Having said that, thank you Jep for blazing the trail.

Well said, Dom.

I'm working with a spare harness right now. Here is the plan:

1. Finish re-pinning and adding the needed additional wiring.
2. Burn a compatible stock tune into the PCM.
3. Hook up the modified harness to my spare set of LT5 sensors.
4. Hook up engine harness to my car and power up.
5. Use a signal generator to provide crank, cam and speed signals to PCM.
5. Scan the PCM to make sure that I'm getting rational values and outputs are being triggered correctly.
6. Check functionality of my solution to the PCM/CCM communication problem.
7. If all is good to this point, I will install the crank reluctor and sensor and replace the harness/ECM on my car with the modified harness/411 PCM. Plan is also to run COP pencil coils(smart ones).
8. Modify the stock tune with values that should get the engine up and running reasonably well.
9. Tune as required to get engine running well on primaries only.
10. Install custom PCM operating system to allow control of secondaries.
11. Tune secondary maps.
12. If all is well to this point, finalize and install cam sensor solution to allow for misfire detection. FYI, the 411 PCM is sophisticated enough to run perfectly with no cam sensor. No cam sensor only results in slightly longer crank times(may take one revolution instead of 30 degrees). It does not resort to firing of injectors or coils in pairs or anything like that. The ONLY thing lost without a cam sensor is misfire detection.

All of this is based on stuff from the internet....and you know that they can't

put it on the internet if it's not true.

Jep

VetteVet · 02-18-2013

It looks like I may have sourced the COP ignition coils. They are a very good fit. The ridged seal is a snug fit in the spark plug hole and the length is almost right on the money. They are smart coils, so there should be no problem controlling them with the LS1 PCM.

I'm going to pick one up(I borrowed this one) and verify that the PCM can control it.

Jep

XfireZ51 · 02-18-2013

Jep,

Very cool. What are they off of? GM? Am I looking at 3 or 4 pins?

Blue Flame Restorations · 02-18-2013

Quote:

Originally Posted by VetteVet

Well said, Dom.

I'm working with a spare harness right now. Here is the plan:

1. Finish re-pinning and adding the needed additional wiring.
2. Burn a compatible stock tune into the PCM.
3. Hook up the modified harness to my spare set of LT5 sensors.
4. Hook up engine harness to my car and power up.
5. Use a signal generator to provide crank, cam and speed signals to PCM.
5. Scan the PCM to make sure that I'm getting rational values and outputs are being triggered correctly.
6. Check functionality of my solution to the PCM/CCM communication problem.
7. If all is good to this point, I will install the crank reluctor and sensor and replace the harness/ECM on my car with the modified harness/411 PCM. Plan is also to run COP pencil coils(smart ones).
8. Modify the stock tune with values that should get the engine up and running reasonably well.
9. Tune as required to get engine running well on primaries only.
10. Install custom PCM operating system to allow control of secondaries.
11. Tune secondary maps.
12. If all is well to this point, finalize and install cam sensor solution to allow for misfire detection. FYI, the 411 PCM is sophisticated enough to run perfectly with no cam sensor. No cam sensor only results in slightly longer crank times(may take one revolution instead of 30 degrees). It does not resort to firing of injectors or coils in pairs or anything like that. The ONLY thing lost without a cam sensor is misfire detection.

All of this is based on stuff from the internet....and you know that they can't put it on the internet if it's not true.

Jep

Jep, just stay away form the French models! LOL

02-15-2013	#11
VetteVet Join Date: Jan 2009 Location: Mandeville, LA Posts: 340	Re: Anyone care to guess... Oh, I almost forgot. Built in transmission controller with the ability to handle most of the GM electronic transmissions out there. PCM with your tune burned in can be had for about $110.00.

02-15-2013	#12
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,681	Re: Anyone care to guess... Jep, Good luck. This would be cool. Let me know if I can help. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

02-15-2013	#13
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: Anyone care to guess... Wow just wow. This is the way forward. OBD2 ='s bluetooth wireless scanning and tuning on the fly capabilities as possibilities reguardless of the platform. GL Jep !!!!! __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

02-15-2013	#16
alwayscode390 Join Date: Dec 2012 Location: STL Posts: 492	Re: Anyone care to guess... The chip/ tune part you mentioned makes sense... but I wasn't sure about the actual wiring harness from the computer to the engine. --- __________________ [SIGPIC][/SIGPIC] 01' Dodge Viper GTS 11' Ford Raptor 90' ZR-1 Corvette LPE #699

02-18-2013	#18
VetteVet Join Date: Jan 2009 Location: Mandeville, LA Posts: 340	Re: Anyone care to guess... It looks like I may have sourced the COP ignition coils. They are a very good fit. The ridged seal is a snug fit in the spark plug hole and the length is almost right on the money. They are smart coils, so there should be no problem controlling them with the LS1 PCM. I'm going to pick one up(I borrowed this one) and verify that the PCM can control it. Jep

02-18-2013	#19
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,681	Re: Anyone care to guess... Jep, Very cool. What are they off of? GM? Am I looking at 3 or 4 pins? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX Last edited by XfireZ51; 02-18-2013 at 06:26 PM.