Im looking at some wet kits (Zex and NX specifically) and I hear alot of people will retard their ignition when using nitrous. Will I have to do anything like that if I go with a 75 or 100 wet shot?

 

usually it is recomended to retard 1 to 2 degrees of timing for every 25hp of nitrous your injecting but to do that in your RD2 your gonna have to install some kind of electronic like an MSD-DIS with retard control



although a lot of people running more modern DIS ignitions like ours dont even bother to do this, i've seen beta swapped accents running 175hp of nitrous with no ingnition retard, the least you cand do is be sure your knock sensor is working properly

 

So there will be no problem if I run 75-100 wet shot with no ignition retard? Only colder plugs ( BKR7E ) will do the job ?

 

colder plugs are the cheapest and easiest way to retard timing

 

colder plugs could help a bit, yeah go for it. if you have access to a scanner with data check that your knock sensor is working, that and the plugs are going to be your only line of defense, if your engine is good i dont see the problem in stuffing 75 or even 100 shot

 

Speaking of retarded . . .



You would think someone has already had this conversation somewhere . . . oh, wait* . . .



If you are running plugs that are too "hot" or too long, you will have problems. If you run colder plugs to be "safe" when running nitrous, you will have to run your engine harder during daily driving, or the plugs will foul more quickly. The computer handles both fuel and timing; spark plugs, when properly selected, only make a zap. When improperly selected, they can lead to problems. Properly selected plugs will *always* run in the range of 700-1000 degrees, preferably over 850-ish. That is what your hot/cold plug question really boils down to.



Further reading:

http://www.rcmedic.com/sparkplug.asp

http://www.strappe.com/plugs.html

* http://forums.evolutionm.net/5032200-post13.html



All that said, a 1-step colder plug is widely recognized as a prudent safety measure when running large amounts of nitrous, if you aren't going to be doing proper tuning (read: standalone tuned on a dyno).

 

The engine is good , but I was running 50 shot with bkr5e so I will change em with bkr7e. I'm also driving with 100 octane and hopefully with the colder plugs I'll have no problems

 

I asked a lot of guys that are using nitrous if bkr7e are good for everyday drivin' and they told me ”yes no roblem“ ! So stocker bkr6e are ok for 75-100 wet shot?

 

You're asking the wrong cat, I haven't the foggiest idea. Best bet for an authoritative answer would be the mfr. of the kit you will use.