GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: JamesS on 19 April 2012, 14:57
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I never even considered it before I had a good read about it. Im not considering buying one right now but having looked on Wizards of Nos website here:
http://www.noswizard.com/index.php/car-nitrous-kits-1/wet-car-nitrous-kits/efi-wet-car-nitrous-kits.html
...its changing my mind. It seems that it isn't that expensive for a complete kit (compared to chargers or turbos) and it gives you significant power which you can turn off when driving normally (around 90% of the time for me)
To make the kit reliable and help your engine last there are loads of failsafe features and options available. Window Switch that restricts when the hit comes in e.g. between 3000 - 6000rpm and a micro switch that only activates the system when you have your foot right down. Fuel pressure regulator or AFM that stops the flow of Nos if fuel pressure drops or mixture leans out. Different injectors/foggers/nozzles available that give power increases of 25, 50, 75, 100 etc so you can increase the nozzle size with the same kit installed.
The ONLY negatives that I can see is the need to refill the bottle and flick a switch before you use it. Having looked at the costs of turbo and charger installs it seems like a very good choice, and you can move the kit over to your next car easily. :-D
What do other people think, anyone installed a kit? or have experiences of running nitrous?
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I've seen prices drop alot on them kits I still wonder why sometimes if they are so good?
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im running nitrous on an 8v gti and it makes a big difference when its on i would say its well worth the price,but if i was you i would runa remote bottle opener aswell so the bottle is closed unless you want to use it.
also there quite simple and easy to install
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I dont really understand how a fuel pressure reg or AFM is going to pick up that you are running lean fast enough to save the engine if you really do hit bad detonation (unlikely as it is) and there is no mention there of altering timing to suit the gas when its on (not essential for small doses) but otherwise, nitrous is remarkably safe if used in sensible doses.
Personally I think the low prices are more to do with the bad rep that nitrous still has and the implications on insurance keeping people away from doing it that forces them to pitch their prices low. Only my thoughts though.
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I've messed about with nitro on bikes and aviation fuel in all cases the bike had died a horriable death and the pistons and rods just crumbled in my hands or looked like a Salvador Dali master piece.
I was young and the bikes where scrap that we rebuilt for fun, but most cases they just blew up!
Its like unprotective sex, pleasure lasts for 3 seconds then its off to STD clinc. :smiley:
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nitrus is good fun.
set it up right and its very relaible. if your running big jets and it dose go wrong or was setup badly it's game over for engine. if it detonates / knocks you'll probaly get away with a headgsket. if it gose into preignition by the time you've let off the power the engine will allready be scrap but the sa,e is true for superchargers and turbos
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DOA - The fuel pressure sensor can be wired up to shut off the Nitrous as soon as there is a drop in fuel pressure which would cause a lean mixture before it occurs.
A lambda sensor can be used to give you air/fuel info and could shut off the Nitrous if the mixture leans out. There are loads of ways to prevent the mixture leaning out which all costs but is money well spent and is still far cheaper than turbo or SC.
Before installing anything I would do a head gasket with ARP studs and check the engine over internally. I would use cooler plugs and retard by 2 degrees & install an oil cooler. I wouldn't go crazy with the bhp, I would be happy ending with 280bhp, working up from 50bhp -> 100bhp shot. :laugh:
From what I gather most of the time engine damage occurs with a cheap system that isn't installed properly or too high dose for revs or engine. The vr6 is good engine to do it to. People run over 300bhp reliably on standard internals. I think the kits are relaively cheap because they don't really consist of that much compared to a turbo or SC and the wet kits don't require the ECU to be mapped or a rolling road so setup costs are reduced.
I think if it's done sensibly it would be a better option for alot of people, and it would be seriously fun. Adrian Flux insure cars with nitrous. I don't think that insurance would be any more than turbo or SC.
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1. I think DOA is suggesting that the sensors ain't gonna catch leaning out before it's grenaded the motor.
2. Have you compared the insurance costs NO2 vs forced induction? I seem to recall there's quite a difference.
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i go an insurance quoute for duffing nitro on the golf it was scary it ups the premium 1% per nitro donkey
s3 was the same, to add 100 bhp of nitro to it would have ended up with it costing £1700 a year to insure, it cost £900 to insure fully comp with 450 garret assisted donkeys
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How much does it affect the fuel consumption :grin:
I would think its safe map is always running very very rich..... :rolleyes:
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DOA - The fuel pressure sensor can be wired up to shut off the Nitrous as soon as there is a drop in fuel pressure which would cause a lean mixture before it occurs.
A lambda sensor can be used to give you air/fuel info and could shut off the Nitrous if the mixture leans out. There are loads of ways to prevent the mixture leaning out which all costs but is money well spent and is still far cheaper than turbo or SC.
As DH picked up, lambda (wide or narrowband) is definately not fast enough to stop a grenaded engine and I doubt a fuel pressure sender would give a consistent enough signal to use as a guide to leaning either but could well be wrong on the last one. I would certainly want a pretty fast sampling rate if I was relying on a fuel pressure sender to make my engine completely safe. Not that Im saying dont do it (I probably wouldnt do either lol, but then, I wouldnt be arsed with the hassle of running nitrous anyway). As for running the timing permanently retarded and running an oil cooler, both of these have bad effects in themselves. Either way, its all compromise and as long as your sensible and the engine is healthy, your unlikely to hit any major problems with nitrous, I was just pointing out the flaws in the plans :smiley:.
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So, it seems it is a bit of a minefield! lol I think it would be fun and COULD be a good option if it's done sensibly but as with other FI there will be plenty of setup time & some replaced parts to get it working reliably. It doesn't appear to be as forgiving as other FI either because it can go so wrong so quickly. The sensors etc I have mentioned have been used by other people, I have no experience with nitrous and have just read about this so don't know response times and their effectiveness at preventing lean mix but if they are not fast enough then it does seem a bit pointless.
Don't like the sound of the insurance premiums you got either danny_p! I would prefer the 450 garret donkeys over 325 Nitrous donkeys any time though!
One good thing about a wet system is that the fuel/Nitrous mix is pre-set and separate from ECU/injectors so if it's turned off then you will have normal vr6 consumption, which is one of the benefits over other FI. During Nitrous it's probably wise to have it on the rich side and you will probably get 5mpg, haha.
Hmmm, decisions decisions........ :huh: