Im thinking of madness in prep for York drag.........Nitrous!

This is poss plus 12" wheels!
Yes It'll fly, the spoiler will be functional!

Slight thing im thinking is:

Usual procedure for N2O is to slightly advance \ retard \ fettle the ignition so it ignites correctly. Somehow, Im thinking the Marelli unit wont like this too much!

Also, I understand from prev posts that the MAP sensor doesnt like +ve pressure. Logically a squirt of N2O would give +ve pressure? Am I wrong??



Tom (AofB)

95 Cinq Sporting - Rattly GrpN Catback Exhaust, <font color="black">Buckets</font id="black"> and 3pt Harnesses,Sexy VW styleé dials (that look great, but dont work!! D)), 10" Sub and 6x9's, ETech Wing. Lots of Dirt!
1242cc Engine to go in soon, boot delock soon, K+N still in garage!

I think it all depends on what level of nos shot you're thinking of. A 25bhp shot should, AIUI not cause any bother. Brickfoot and another friend have it on their cars.

Pete.
1242cc cinq, turbo cinq, Cinqs&Seis Yahoo group, Clubcento

Hmm.. I was only thinking 25BHp, much more would cause probs.

Apparently an engine should happily take 40% increase in power with extra fuelling of course.

Im just confused about how or if the ignition or MAP would be affected

Tom (AofB)

95 Cinq Sporting - Rattly GrpN Catback Exhaust, <font color="black">Buckets</font id="black"> and 3pt Harnesses,Sexy VW styleé dials (that look great, but dont work!! D)), 10" Sub and 6x9's, ETech Wing. Lots of Dirt!
1242cc Engine to go in soon, boot delock soon, K+N still in garage!

well, the ignition's standard on my turbo cinq running 90bhp and 0.3 bar boost.... just a little gadget that stops the map sensor seeing the boost that's all. Shouldn't have the map problem with the nos.

Pete.
1242cc cinq, turbo cinq, Cinqs&Seis Yahoo group, Clubcento

Whats the widget? Easily available?

Tom (AofB)

95 Cinq Sporting - Rattly GrpN Catback Exhaust, <font color="black">Buckets</font id="black"> and 3pt Harnesses,Sexy VW styleé dials (that look great, but dont work!! D)), 10" Sub and 6x9's, ETech Wing. Lots of Dirt!
1242cc Engine to go in soon, boot delock soon, K+N still in garage!

Arse...

My nitrous kit is running a 30 bhp (approx) increase and is being used as a "dry" kit. It copes pretty well with it as the ECU see's extra oxygen at the lambda and compensates by providing extra fuel at the injector so the mixture is not weak/rich. It's a safe setup and will run without any problems as a dry kit on fuel injected cars. I have my kit or sale if you're interested for £200 and includes a fuel solenoid to convert the kit to "wet" use if needed.

Ignition timing doesn't have to be touched unless you're running anything more than 50bhp extra. Colder spark plugs are ideal but not needed until you start putting out more than 50bhp like above.

The MAP sensor can take the nitrous shot and does not pressurise the intake like a turbo, i'm running a vacuum gauge in mine too and the needle doesn't go any more than 0in/mg, any further would be positive boost which you won't get unless you are running a turbo.

All in all, Fitting Nitrous is no problem at all as long as you stay below 50bhp increase otherwise ignition timing requires ECU mods to run safely with over 50.






The Bigger the car, the smaller the dick. Go Cinquecento!!!

Originally posted by arseofbox
Whats the widget? Easily available?

Tom (AofB)

Click to expand...

It's part of the Van Aaken conversion, but I wouldn't think you'd need it.

Pete.
1242cc cinq, turbo cinq, Cinqs&Seis Yahoo group, Clubcento