M.BOZZ

iTrader: (14)

Well had a miss hap with a nitrous tune and long story short, its round 2 time. Pulled motor and sent the heads out for repair and opening up the exhaust ports and alittle intake work . Also replacing the pistons and cam ( just my choice on the cam ) Question is when I go to get the motor tuned, should I have it tuned with the hotter plugs or with the colder plugs that I will be using with the nitrous ? ( Will be spraying 3-400 shot ) I do have a timing controller for the nitrous, thanks

Rise of the Phoenix

iTrader: (27)

Is it a track only car? If so, I'd get the tune with the colder plugs, but if it's a car you drive on the street quite a bit, I'd get the tune with the hotter plugs and then pull timing and check the plugs when you spray it at the track.

M.BOZZ

iTrader: (14)

Mostly track car, was doing most of the tuning on a dyno do to 1 hour drive to the track and only be able to run twice

Rise of the Phoenix

iTrader: (27)

Hell, if you have access to a dyno, get a good NA tune-up with the hotter plugs, put them and put the colder plugs in and tune it on nitrous.

M.BOZZ

iTrader: (14)

Thank you Phx, I will do that as far as n/a, as far as the nitrous I think I will tune that in smaller steps. I bought a afr gauge so I can see whats going on and tune it with freeway pulls. We were chasing the loss of power ( 125 ) or so on the shot, and yes I know numbers don't matter much but it tracked like **** also. We just couldn't get it to lean out on the shot and 9 pulls with the same plugs and well, you know the rest

Rise of the Phoenix

iTrader: (27)

Sounds like you know what you're doing and are on the right track. Nitrous is really cool and an easy way to make crazy power, but it's an expensive lesson learned if you don't.

M.BOZZ

iTrader: (14)

At least I can say I built a good motor lol, and yes, nitrous is fun but not forgiving

RobsZ28

iTrader: (3)

Mike, I wouldn't do nitrous tuning off a afr gauge. Melt **** down that way, afr gauge in my car says it's pig rich, but I pull the plugs and the fuel line on the spark plug is perfect. It's going to be tough to get the setup right with freeway pulls, too much idling and cruise time on the plugs. You really need to check plugs with only 1 wot pass on them.