VCN-1000 kit lean issue

bigblock_stang · 07-06-2006, 12:57 PM

I know I'm new here and you are thinking I haven't searched...but I did.
I found two people I believe that have attempted to tune on the dyno with a
VCN-1000 and have issues running lean. I was just wondering if there are any
other people here that have had this same problem. I own a few cars but one
of them is a nitrous fed 2000 cougar. Over the past few years I have gone
back and forth with Jose at Python (best customer service ever). I've sent
my dyno charts and tests to Jose and he has replaced my control module
multiple times. But it's like the control module is not pulsing the injectors
at all. We added some fuel with my S-AFCII but that is not how it should
be done.

Sorry for the long post but I'm looking to see if there are any owners here
who have been able to get their VCN-1000 kit to actually pulse the injectors.
I've seen this exact same problem on the Maxima boards and other Mustang
boards.

Some background on the cougar
SVT upper and lower intake man.
SVT 19lb inj.
SVT TB
CAI
MSDS headers Y-pipe
test pipe with bung welded for dyno
Tru Bendz exhaust
ASP underdriven crank pulley
TR6 NGK plugs
Apexi S-AFCII
VCN-1000
Derale oil cooler
and other crap too

WaterDR · 07-06-2006, 12:59 PM

Are you saying that the VCN-1000 would not add any fuel at all? Or just not respond to the dyno tuner?

3V2000GT · 07-06-2006, 01:01 PM

I had the venom 1000 and recently blew my engine, i do not know if it was because of the nitrous kit, as i was only running a 50 shot without the bottle heater. I wish I could help you out but if my engine failure is because of the nitrous then I would guess that it was running lean, and the injectors weren't being pulsed or being pulsed very little

BTW the venom 1000 is not a tuner friendly system, its a self tuning system

bigblock_stang · 07-06-2006, 01:34 PM

We tuned the car N/A just tweaking the A/F with the AFCII first.
We got that where we wanted and moved on to some nitrous
runs. I turned on the bottle heater got it up to 900psi ran a 50 shot
and the A/F went crazy. It went wayyyy lean like 15 or so. I have
my doubts it was adding fuel at all. So I sent the module back a few
times and Jose mentioned that he could set the kit to pulse the maximum
amount of fuel it is capable of. I told him to do that. I took it back to my
dyno and it ran lean again.

I have 2lb larger SVT injectors and my fuel pump is definetly not running
out of steam. I've been on the phone with Jose for countless hours.
He's always prompt on trying to help me out but I just don't think this
kit works right. I believe it's less complicated than some on this site
make it out to be. It doesn't monitor the A/F ratio through the voltage from the O2 sensor to add the amount of fuel it needs. It is supposed to pulse
the same amount of fuel each time no matter how lean the car runs. I
believe the O2 sensor is monitored just to watch the A/F and if it goes
lean then it cuts off nitrous flow.

jeredan2003 · 07-09-2006, 11:20 PM

There is no way to tune with the VCN-1000. If you want the car tuned correctly, you should sell the kit and buy an NOS or Nitrous Express kit. The Venom kit is supposed to adjust fuel on its own, but thats just what its SUPPOSED to do ....lol.

jeredan2003 · 07-09-2006, 11:24 PM

Also, if you do buy another kit in the future, make sure its a wet style kit. Much easier to tune, and you dont need larger injectors

bigblock_stang · 07-10-2006, 07:45 AM

I could not buy a true dry kit since my car runs a returnless fuel system
and I have no FPR.

Yeah I may end up putting this on ebay.:bash: :censored:

Oh well you live you learn.
On the upside I went to Fun Ford Weekend what a turn out!!!!
My favorite was the 1400HP 86 Thunderbird 460ci twin turbo setup.

jeredan2003 · 07-10-2006, 10:50 AM

Quote:

Originally Posted by bigblock_stang

I could not buy a true dry kit since my car runs a returnless fuel system
and I have no FPR.

Yeah I may end up putting this on ebay.:bash: :censored:

Oh well you live you learn.
On the upside I went to Fun Ford Weekend what a turn out!!!!
My favorite was the 1400HP 86 Thunderbird 460ci twin turbo setup.

Yea, the dry kits are safer against nitrous backfires, but if you just buy a window switch you wont have any problems with that. Wet kits are just better.

bigblock_stang · 07-10-2006, 10:59 AM

I might try one more thing.

If I can get it to atleast pulse the injectors I can be safe with my 50 shot
and still not tune it. I have two step colder plugs and high octane I
just need it to add some fuel. I think it's pulling a false reading from my O2
sensor. I really don't want to get another nitrous kit because I'm trying
to move on to my 65 and just finish this car.

Shaker242 · 07-10-2006, 02:59 PM

I'll assume you turned off your traction control system too? This by default leans out the motor, other than that you may need to check into a Diablo MAFia to get the correct A/F adjustment. I had some problems with my supercharger re: A/F until it was tuned with the MAFia... I don't use Nitros, so I may be completely off base here just didn't see it mentioned.

jeredan2003 · 07-10-2006, 03:11 PM

Quote:

Originally Posted by bigblock_stang

I might try one more thing.

If I can get it to atleast pulse the injectors I can be safe with my 50 shot
and still not tune it. I have two step colder plugs and high octane I
just need it to add some fuel. I think it's pulling a false reading from my O2
sensor. I really don't want to get another nitrous kit because I'm trying
to move on to my 65 and just finish this car.

Well if you can find a way of adding fuel, then youll be fine.

bigblock_stang · 07-10-2006, 03:41 PM

Quote:

Originally Posted by Shaker242

I'll assume you turned off your traction control system too? This by default leans out the motor, other than that you may need to check into a Diablo MAFia to get the correct A/F adjustment. I had some problems with my supercharger re: A/F until it was tuned with the MAFia... I don't use Nitros, so I may be completely off base here just didn't see it mentioned.

It's on my Cougar I was just posting here because I found this site in my search online.
Some background on the cougar
SVT upper and lower intake man.
SVT 19lb inj.
SVT TB
CAI
MSDS headers Y-pipe
test pipe with bung welded for dyno
Tru Bendz exhaust
ASP underdriven crank pulley
TR6 NGK plugs
Apexi S-AFCII
VCN-1000
Derale oil cooler
and other crap too

Samsstang · 07-12-2006, 12:13 PM

Quote:

Originally Posted by jeredan2003

There is no way to tune with the VCN-1000. If you want the car tuned correctly, you should sell the kit and buy an NOS or Nitrous Express kit. The Venom kit is supposed to adjust fuel on its own, but thats just what its SUPPOSED to do ....lol.

I ran my car w/a 75-80 shot for almost 5 years with stock tune and never had any mayor problems, car put down 323rwhp & 417rwtq It did run lean when using the 100 shot. Got it tuned over the winter with the 100shot Diablo predator 3 pos. switch and put down 368rwhp & 471rwtq! I did switch to a SVT Focus fuel pump & FRPP 30lb inj. It can be tuned!

jeredan2003 · 07-12-2006, 06:32 PM

Quote:

Originally Posted by Samsstang

I ran my car w/a 75-80 shot for almost 5 years with stock tune and never had any mayor problems, car put down 323rwhp & 417rwtq It did run lean when using the 100 shot. Got it tuned over the winter with the 100shot Diablo predator 3 pos. switch and put down 368rwhp & 471rwtq! I did switch to a SVT Focus fuel pump & FRPP 30lb inj. It can be tuned!

Well the Venom kit is supposed to pulse the injectors to add more or less fuel. So depending upon the bottle pressure it may throw your tune off by adding too much or too less fuel. Thats just what ive heard from others that have the kit.

07-06-2006, 12:57 PM	#1 (permalink)
bigblock_stang Junior Member Join Date: Jul 2006 Posts: 12	VCN-1000 kit lean issue I know I'm new here and you are thinking I haven't searched...but I did. I found two people I believe that have attempted to tune on the dyno with a VCN-1000 and have issues running lean. I was just wondering if there are any other people here that have had this same problem. I own a few cars but one of them is a nitrous fed 2000 cougar. Over the past few years I have gone back and forth with Jose at Python (best customer service ever). I've sent my dyno charts and tests to Jose and he has replaced my control module multiple times. But it's like the control module is not pulsing the injectors at all. We added some fuel with my S-AFCII but that is not how it should be done. Sorry for the long post but I'm looking to see if there are any owners here who have been able to get their VCN-1000 kit to actually pulse the injectors. I've seen this exact same problem on the Maxima boards and other Mustang boards. Some background on the cougar SVT upper and lower intake man. SVT 19lb inj. SVT TB CAI MSDS headers Y-pipe test pipe with bung welded for dyno Tru Bendz exhaust ASP underdriven crank pulley TR6 NGK plugs Apexi S-AFCII VCN-1000 Derale oil cooler and other crap too __________________ 1965 Mustang Coupe drag project: C4, 460 bored .30 and much more 2006 Ford Fusion SEL 3L 2005 Niassan Altima 3.5L 2000 Cougar SVT 2.5L all bolt-ons and VCN-1000 kit 1978 F-250 Lifted 6" 36" swampers 351M many bolt-ons Dads:2001 Mustang GT Convert, BBk headers, Borla side exhaust, BBK pulleys, K&N CAI, and Super Chip

07-06-2006, 12:59 PM	#2 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,366	Are you saying that the VCN-1000 would not add any fuel at all? Or just not respond to the dyno tuner? __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

07-06-2006, 01:01 PM	#3 (permalink)
3V2000GT 46MONSTER Join Date: Jan 2006 Location: Wheaton, IL Posts: 2,209	I had the venom 1000 and recently blew my engine, i do not know if it was because of the nitrous kit, as i was only running a 50 shot without the bottle heater. I wish I could help you out but if my engine failure is because of the nitrous then I would guess that it was running lean, and the injectors weren't being pulsed or being pulsed very little BTW the venom 1000 is not a tuner friendly system, its a self tuning system __________________ 2000 GT Black on Tan, TKO 600: 370rwhp 370rwtq NA Built 3v 2004 Honda CBR 600 F4i Black/Red 2000 SVT Lightning Silver i love jinny!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!! lucky is awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

07-06-2006, 01:34 PM	#4 (permalink)
bigblock_stang Junior Member Join Date: Jul 2006 Posts: 12	We tuned the car N/A just tweaking the A/F with the AFCII first. We got that where we wanted and moved on to some nitrous runs. I turned on the bottle heater got it up to 900psi ran a 50 shot and the A/F went crazy. It went wayyyy lean like 15 or so. I have my doubts it was adding fuel at all. So I sent the module back a few times and Jose mentioned that he could set the kit to pulse the maximum amount of fuel it is capable of. I told him to do that. I took it back to my dyno and it ran lean again. I have 2lb larger SVT injectors and my fuel pump is definetly not running out of steam. I've been on the phone with Jose for countless hours. He's always prompt on trying to help me out but I just don't think this kit works right. I believe it's less complicated than some on this site make it out to be. It doesn't monitor the A/F ratio through the voltage from the O2 sensor to add the amount of fuel it needs. It is supposed to pulse the same amount of fuel each time no matter how lean the car runs. I believe the O2 sensor is monitored just to watch the A/F and if it goes lean then it cuts off nitrous flow. __________________ 1965 Mustang Coupe drag project: C4, 460 bored .30 and much more 2006 Ford Fusion SEL 3L 2005 Niassan Altima 3.5L 2000 Cougar SVT 2.5L all bolt-ons and VCN-1000 kit 1978 F-250 Lifted 6" 36" swampers 351M many bolt-ons Dads:2001 Mustang GT Convert, BBk headers, Borla side exhaust, BBK pulleys, K&N CAI, and Super Chip

07-09-2006, 11:20 PM	#5 (permalink)
jeredan2003 Senior Member Join Date: Nov 2004 Location: Murfreesboro, TN Posts: 1,788	There is no way to tune with the VCN-1000. If you want the car tuned correctly, you should sell the kit and buy an NOS or Nitrous Express kit. The Venom kit is supposed to adjust fuel on its own, but thats just what its SUPPOSED to do ....lol. __________________ 2003 DSG GT 5-speed Hellion 62mm and Flowmaster catback..... My bonestock 2v engine had been through 2 years of NX 100 shot, 3 years running 8-12lbs vortech s-trim, got into boost daily while racing on the weekends, had 157,000 miles on it, and was running like new

07-09-2006, 11:24 PM	#6 (permalink)
jeredan2003 Senior Member Join Date: Nov 2004 Location: Murfreesboro, TN Posts: 1,788	Also, if you do buy another kit in the future, make sure its a wet style kit. Much easier to tune, and you dont need larger injectors __________________ 2003 DSG GT 5-speed Hellion 62mm and Flowmaster catback..... My bonestock 2v engine had been through 2 years of NX 100 shot, 3 years running 8-12lbs vortech s-trim, got into boost daily while racing on the weekends, had 157,000 miles on it, and was running like new

07-10-2006, 07:45 AM	#7 (permalink)
bigblock_stang Junior Member Join Date: Jul 2006 Posts: 12	I could not buy a true dry kit since my car runs a returnless fuel system and I have no FPR. Yeah I may end up putting this on ebay.:bash: :censored: Oh well you live you learn. On the upside I went to Fun Ford Weekend what a turn out!!!! My favorite was the 1400HP 86 Thunderbird 460ci twin turbo setup. __________________ 1965 Mustang Coupe drag project: C4, 460 bored .30 and much more 2006 Ford Fusion SEL 3L 2005 Niassan Altima 3.5L 2000 Cougar SVT 2.5L all bolt-ons and VCN-1000 kit 1978 F-250 Lifted 6" 36" swampers 351M many bolt-ons Dads:2001 Mustang GT Convert, BBk headers, Borla side exhaust, BBK pulleys, K&N CAI, and Super Chip

07-10-2006, 10:59 AM	#9 (permalink)
bigblock_stang Junior Member Join Date: Jul 2006 Posts: 12	I might try one more thing. If I can get it to atleast pulse the injectors I can be safe with my 50 shot and still not tune it. I have two step colder plugs and high octane I just need it to add some fuel. I think it's pulling a false reading from my O2 sensor. I really don't want to get another nitrous kit because I'm trying to move on to my 65 and just finish this car. __________________ 1965 Mustang Coupe drag project: C4, 460 bored .30 and much more 2006 Ford Fusion SEL 3L 2005 Niassan Altima 3.5L 2000 Cougar SVT 2.5L all bolt-ons and VCN-1000 kit 1978 F-250 Lifted 6" 36" swampers 351M many bolt-ons Dads:2001 Mustang GT Convert, BBk headers, Borla side exhaust, BBK pulleys, K&N CAI, and Super Chip

07-10-2006, 02:59 PM	#10 (permalink)
Shaker242 Senior Member Join Date: Jul 2005 Location: Northern Virginia Posts: 121	I'll assume you turned off your traction control system too? This by default leans out the motor, other than that you may need to check into a Diablo MAFia to get the correct A/F adjustment. I had some problems with my supercharger re: A/F until it was tuned with the MAFia... I don't use Nitros, so I may be completely off base here just didn't see it mentioned.

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