Nitrous...

I have managed to get hold of a Noz kit pretty cheap. My intension is to put it on my GTA Turbo . I spoke to a specialist and he says not to take it to more than a 75 bhp increase, he says i can get a 100 bhp more with it from standard, but it gets a bit silly for road use....
Has anyone ever put Noz on thier GTA or does anyone know of any other little tricks to do once the nitrus is fitted (apart from keeping a spare engine )?

I reckon NOS will work well on a GTA turbo. As the intercooling is pretty poor standard the cooling effect will increase the power gained. I would start with less than 75bhp jets though. You will probably find 50bhp jets will net you around 60 bhp anyway and its easy to upgrade to bigger jets later if everything holds together with the smaller increase. I have a kit too but I'm intending to put it on my 21 Turbo 4 wheel drive. Always fancied trying it on the GTA though! Keep me posted, I 'm really interested to see how you get on. And don't be greedy. By the way a mate of mine at Power Engineering is the nuts with the N20, fitting and setting up, last time I was down there they were putting a 400 bhp kit (yep 400) on a new Dodge Viper.

Ive worked with a 25 Turbo from Essex with NOS. The only problems it had was that, because the turbo and exhaust manifold were very restrictive they started to glow very quickly. Had to use a smaller plug gap values as the boost under load was blowing out the spark causing a high speed misfire. The fuel pump did slightly dip in pressure as the fuel solenoid was activated going slightly lean for a second, mainly in third and forth but it was a 25 which is a one fuel pump vehicle rather than the GTA which has two. Also the 25 was a single fuel reg model, which was easier to get the fuel pressure feed than the twin regs on the later GTA's. Power wise it made about 50 bhp extra on 75hp kit. Again the exhaust side was two restrictive..everything being relative theres no point putting it in if it cant get it. Tried it with 25 and GTA ECU. GTA ECU did make slightly more power, but the 25 ECU was smoother and torquier low down. The 25 ECU is mapped with more low down ignition advance which is where the nitrous power is mainly focussed at.Fuel solenoid was machined into the throttle body, parrallel to the air intake temp probe, to give extra richness on load.