Nitrous question
Thread Starter
Racer
Joined: Jun 2012
Posts: 283
Likes: 9
From: Thibodaux Louisiana
Nitrous question
I have a 98 c5 a4. Mods include vararam, ls6 intake, 80mm bbk tb, long tube ceramic coated headers, no cats, magnaflow system, nitto 555r's. Has been tuned by thunderracing in baton rouge.
I just bought a zex dry system (#82011). Only plan on going as high as 75shot. The system is a complete bolt-on and is ready to go.
Do i have to change the plugs? (they were just changed less then 200 miles ago, went with ac delco)
Do i tap the air intake or can i buy a plate?
Do i need it re-tuned?
Is this system really a plug and play system? If not what else do i need?
I just bought a zex dry system (#82011). Only plan on going as high as 75shot. The system is a complete bolt-on and is ready to go.
Do i have to change the plugs? (they were just changed less then 200 miles ago, went with ac delco)
Do i tap the air intake or can i buy a plate?
Do i need it re-tuned?
Is this system really a plug and play system? If not what else do i need?
Drifting
Joined: Oct 2002
Posts: 1,335
Likes: 76
From: Bedford Va.
you did not note injector upgrade with your mods. Your fuel comes from the stock injector.
A dry system must inject nitrous in front of the MAF (a plate at the TB is no good for a dry setup).
The MAF will think the temps have dropped and the computer will go rich-this is good.
If your injectors can't supply enough fuel your motor is done.
A 98 computer is slower than later models this might create a lean condition at first if the injectors are ok.
a 75 shot is the most I would try with your setup. Dry systems can require more tuning time to run big shots.
Your first shot should be on a dyno with the bottle at temp/pressure 950-1000. The tuner will have to watch the fuel ratio and do small pulls not to toast your motor. They will also pull a little timing.
Plugs should be one size cooler NGK TR6 are good.
I looked at the 82011 kit this does not look like the right kit for a corvette.
The fuel enrichment circuit is not compatable with a 98 vette.
Someone please confirm!
A dry system must inject nitrous in front of the MAF (a plate at the TB is no good for a dry setup).
The MAF will think the temps have dropped and the computer will go rich-this is good.
If your injectors can't supply enough fuel your motor is done.
A 98 computer is slower than later models this might create a lean condition at first if the injectors are ok.
a 75 shot is the most I would try with your setup. Dry systems can require more tuning time to run big shots.
Your first shot should be on a dyno with the bottle at temp/pressure 950-1000. The tuner will have to watch the fuel ratio and do small pulls not to toast your motor. They will also pull a little timing.
Plugs should be one size cooler NGK TR6 are good.
I looked at the 82011 kit this does not look like the right kit for a corvette.
The fuel enrichment circuit is not compatable with a 98 vette.
Someone please confirm!
Last edited by Mr. Jones; Oct 16, 2012 at 01:00 PM. Reason: comment on 82011 kit
Thread Starter
Racer
Joined: Jun 2012
Posts: 283
Likes: 9
From: Thibodaux Louisiana
Well, I bought the kit from a forum member for $300 shipped. Its brand new, so if I have to buy a few other parts to make it work not that big of a deal.....If someone could tell me what i will need that would help big time. Im no stranger to mechanics, but know very very little of nitrous systems. Just want to add a few more hp ya know?
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
The 98's have 28lb injectors and the return style fuel rail system which will support more HP than the later year 26lb injectors and single line fuel supply. I think alot of people would tell you that up to a 100 shot you're OK.
I wouldn't run juice at all in my car unless I knew exactly what what going on..that involves getting a tuner involved.
Just my $.02
What the old line about nitrious..."It's like a hot girl with VD. You'd love to hit it but are afraid of what might happen if you did"
I wouldn't run juice at all in my car unless I knew exactly what what going on..that involves getting a tuner involved.
Just my $.02
What the old line about nitrious..."It's like a hot girl with VD. You'd love to hit it but are afraid of what might happen if you did"
