Z06reformed
Enthusiast
What is a safe power level for 99 for a NOS setup and which model or brand would you recommend?
Nitrous question
- Thread starter Z06reformed
- Start date
Z06reformed
Enthusiast
can you use it in first gear? What kind of tuning do you have to do to the car?I thought just dump appropriate fuel in with the nitrous would be OK on the EFI cars.The last nitrous kit I had was on a IROC back in the day and it was just hook up and go.I know they have got to be a little better in this day and age but its been a long time for me so I havent kept up with it.I think a 200 shot would be the deal.what other supporting gear would you recommend as well.
2001ViperGTS
Enthusiast
You probably won't be able to spray first with stock pilots, get some DRs and you should be OK. Get a VEC2 from Roe to tune it. Here's a link to the VEC2 info...
http://roeracing.com/ProductCart/pc/viewPrd.asp?idcategory=8&idproduct=81
http://roeracing.com/ProductCart/pc/viewPrd.asp?idcategory=8&idproduct=81
VEC2 does a great job with nitrous. it works as my WOT switch and my rpm window switch. then it helps you fine tune it.
1st gear can be sprayed but that comes with practice. i mostly run from 50 to 160mph so 1st gear isnt used.
1st gear can be sprayed but that comes with practice. i mostly run from 50 to 160mph so 1st gear isnt used.
Z06reformed
Enthusiast
The 99 has cast pistons?Is this type of power OK on them instead of forged pistons?
Plumcrazy-what kind of quarter mile times are you running?
Plumcrazy-what kind of quarter mile times are you running?
Z06reformed
Enthusiast
I did read the description of the vec2.can this be programmed correctly by Roe for this setup(NX 200shot) and upon installation be correct?Or is there a lot of tinkering?
Hate to ask so many questions on such a open and shut topic but just not familiar with DC anything or the newer setups like this.
Hate to ask so many questions on such a open and shut topic but just not familiar with DC anything or the newer setups like this.
2001ViperGTS
Enthusiast
99 and older are forged. It comes with software so you can program the cards yourself, but I would recommend you find someone who has experience with it and let them do the tuning for you. There is a lot of VEC2/nitrous info on this site, do a few searches and you should be able to find info on just about anything.
GTSnake
Enthusiast
How do you use your VEC2 to activate your nitrous? I tried hooking up the PWM output from the VEC2 to the nitrous relay but it wouldn't trigger it. I was told it is only a 5v ground signal. I ended up using the microswitch from the nitrous kit.
Z06reformed
Enthusiast
http://www.shopatron.com/moredetail/tp=spec/product_id=NEI15959/300.0.56.12174.0.0.0
I was looking at the Nitrous Express site and saw this part.Would it be better or worse in your opinion to the VEC2?This seems like it would do about everything you could think of and maybe easier to program than VEC2? Certainly as versatile in the least?
I was looking at the Nitrous Express site and saw this part.Would it be better or worse in your opinion to the VEC2?This seems like it would do about everything you could think of and maybe easier to program than VEC2? Certainly as versatile in the least?
honestly i dont know squat about how to tune the VEC2. i had sean set it up for me and i love it. call sean, that guy will answer any question im sure. he is really helpfull.
here is what he sent me in an email..
Z06, id take the vec over that any day. with the vec, you can really fine tune the nitrous AND the motor. its going to give you more hp & torque NA as well.
here is what he sent me in an email..
Z06, id take the vec over that any day. with the vec, you can really fine tune the nitrous AND the motor. its going to give you more hp & torque NA as well.
Andrew2KRT10
Enthusiast
I went with 150 shot, on my 2000 RT/10, Nx system.
Andrew
Andrew
ZO6:
In simple terms the VEC2 can be used as a window switch. The VEC can also be used to tailor your a/f. You will find that when using nitrous in a high volume application the car gets very rich at the end of each gear, the VEC can be used to keep the A/F flat. You will also need a WOT switch tied in series with the VEC.
If you want to use the car on the street, a progressive controller is not a bad idea. The problem is the US manufacturers relabel industrial solenoids which don't work very well when pulsed. You might want to look at the English Company, Wizard of Nos (WON), the US source is Racetested. They have solenoids that are compatible with their progressive controller. I have used NOS brand, NX and now the WON products. With the WON product I am shooting a true 350 with a progressive controller.
In simple terms the VEC2 can be used as a window switch. The VEC can also be used to tailor your a/f. You will find that when using nitrous in a high volume application the car gets very rich at the end of each gear, the VEC can be used to keep the A/F flat. You will also need a WOT switch tied in series with the VEC.
If you want to use the car on the street, a progressive controller is not a bad idea. The problem is the US manufacturers relabel industrial solenoids which don't work very well when pulsed. You might want to look at the English Company, Wizard of Nos (WON), the US source is Racetested. They have solenoids that are compatible with their progressive controller. I have used NOS brand, NX and now the WON products. With the WON product I am shooting a true 350 with a progressive controller.
ACELLR8
Enthusiast
I have been running the 200 shot on my 95 for 4 years now without any issues. The NX kit is a good kit and will run fine without any additional PCM upgrades or VEC2 addition. I am not saying a Vec II is a bad thing but it is not needed. I would start with what ever kit you choose, NX, NOS or the BTR system install it with the wide open throttle switch and an RPM window switch, use the jets for the appropriate shot and you should be fine. What ever you do, don't forget the bottle warmer either.
Start with the 100 shot, and then go up from there. I would recommend that you dyno your car just so you can get your AF numbers, + I am sure you want to see your HP gains. I know from experience that the NX kits if you use the proper N2O jets and fuel jets for the shot you are running, you will definitely not be lean. I am not 100% sure but was told that NX did R&D on the viper and jetted it rich to be safe, as do most other kits.
I was able to make 630 RWHP and 800 RWTQ on an Old Gen I.
Start with the 100 shot, and then go up from there. I would recommend that you dyno your car just so you can get your AF numbers, + I am sure you want to see your HP gains. I know from experience that the NX kits if you use the proper N2O jets and fuel jets for the shot you are running, you will definitely not be lean. I am not 100% sure but was told that NX did R&D on the viper and jetted it rich to be safe, as do most other kits.
I was able to make 630 RWHP and 800 RWTQ on an Old Gen I.
dansauto
Enthusiast
I have been running the 200 shot on my 95 for 4 years now without any issues. The NX kit is a good kit and will run fine without any additional PCM upgrades or VEC2 addition. I am not saying a Vec II is a bad thing but it is not needed. I would start with what ever kit you choose, NX, NOS or the BTR system install it with the wide open throttle switch and an RPM window switch, use the jets for the appropriate shot and you should be fine. What ever you do, don't forget the bottle warmer either.
Start with the 100 shot, and then go up from there. I would recommend that you dyno your car just so you can get your AF numbers, + I am sure you want to see your HP gains. I know from experience that the NX kits if you use the proper N2O jets and fuel jets for the shot you are running, you will definitely not be lean. I am not 100% sure but was told that NX did R&D on the viper and jetted it rich to be safe, as do most other kits.
yeah with heads, cam, headers, and no cats.... not just NOS
I was able to make 630 RWHP and 800 RWTQ on an Old Gen I.
trainville
VCA Venom Member
I too am having problems getting my Vec 2 to activate the NX relay. It's putting out the max, which is 5 volts. Do I need to buy a different relay that WILL trigger with 5 volts, or what? Help!
trainville
VCA Venom Member
C'mon guys, I still can't get the 5 volt Vec2 output to trigger the nitrous relay. When I jump 12 volts to the relay, everything works like a champ (solenoids click on). How have some of you guys made this work? Thanks,
Ted
Ted
BADMOFO
Viper Owner
Has anyone here ever ran nitrous on top of a Roe blower?
mntngts99
Viper Owner
Yes
Try a relay with a 5 Volt trigger and 12 Volt switched leg.
1TONY1
Enthusiast
You may have your relay wired incorrectly. The Vec2 output is 12 volts negative. Also, make sure it is not set up for PWM.
"Programmable output signal (12V- negative) can be used to activate a switched component or PWM (pulse width modulation) controlled component."
http://www.roeracing.com/ProductCart/pc/viewPrd.asp?idcategory=8&idproduct=81#details
1TONY1
Enthusiast
Has anyone here ever ran nitrous on top of a Roe blower?
You would have to be crazy to do that
trainville
VCA Venom Member
I wired my relay to power and ran the negative lead to the Vec2, since it is supposed to put out a negative signal. It still won't trigger the relay.
I AM using PWM, but that's what Sean Roe drew up for a custom program. Are you suggesting using an 'analog out' instead of PWM???
I know my solenoids, etc. are wired correctly because when I disconnect the relay GROUND from the Vec2 and touch it to a ground, the solenoids open. I just can't get the Vec2 to trigger the relay. I've even tried combining Master AND Slave pin 5's in hopes that it would up the voltage enough to trigger the relay. No luck as of yet. I'm in Oregon and just about ready to uninstall everything and send it to Sean Roe for troubleshooting. Any other ideas guys??
I AM using PWM, but that's what Sean Roe drew up for a custom program. Are you suggesting using an 'analog out' instead of PWM???
I know my solenoids, etc. are wired correctly because when I disconnect the relay GROUND from the Vec2 and touch it to a ground, the solenoids open. I just can't get the Vec2 to trigger the relay. I've even tried combining Master AND Slave pin 5's in hopes that it would up the voltage enough to trigger the relay. No luck as of yet. I'm in Oregon and just about ready to uninstall everything and send it to Sean Roe for troubleshooting. Any other ideas guys??
Joseph Dell
Enthusiast
it's all in the program. e-mail or post your vec2 program. you need at least 50% in the RPM tab to activate it...
trainville
VCA Venom Member
My program begins with 50% somewhere around 3500 rpm and is 100% for every entry after that until it tapers back off. Sean Roe wrote the program for me - it's not like I hacked up something myself. And would any parts store carry a relay that would trigger with 5 volts? It's worth a try...
