Anyone with a MK2 Leon on Nitrous?

[Hurdy]

Anyone on here got nitrous?

I know that water/meth is popular, but wondered if anyone has dared venture down the same road as me and would like their opinions and thoughts on it if they have. Cheers

 

[RobH]

I think only TFSI Mike has water meth and i dont think he has it fitted yet and no ones running nitrous either. Your the only crazy mofo with nitrous mate, maybe try the yank forums for advice.

 

[mds1256]

Kev may be on this forum, looks like he runs NOS

http://www.jbsautodesigns.co.uk/team/4/kev-baston

 

[Hurdy]

I think only TFSI Mike has water meth and i dont think he has it fitted yet and no ones running nitrous either. Your the only crazy mofo with nitrous mate, maybe try the yank forums for advice.

Tried the Yank brigade and they are more in the dark over there about NOS with VW's than the UK is

 

[Hurdy]

Kev may be on this forum, looks like he runs NOS

http://www.jbsautodesigns.co.uk/team/4/kev-baston

Cheers for that

I know Kev and JBS are only 15 miles up the road from me. Didn't know they had nitrous on the Leon though. Wonder who actually makes the parts!

 

[Hurdy]

Just dyno'd the car today.....

438.7hp and a peak torque of 510 lbft on nitrous
339.8hp and peak torque of 381lbft without nitrous.

The settings are less agressive for the dyno than on the road as the nitrous wasn't even set to start until 3200rpm.

Absolutely no sign of slip on the DSG box and AFR's on nitrous were a solid, held 11.5.

Interesting for me is that my torque on nitrous is as high at 6000rpm as the peak without nitrous. Also I'm making more power at 3500rpm on nitrous than my peak power without.

This is a REALLY impressive modification and it would be interesting to compare it to say, the GT2871R that I was thinking of fitting.

 

[Al]

You are mad! How does wheelspin affect things with Nitrous?

 

[Murdered LCR]

That must be an animal bet it fun ,

 

[Cupra R]

Great result's Hurdy. Well done.

 

[Hurdy]

You are mad! How does wheelspin affect things with Nitrous?

Okay in the dry as I use NOS to get me off the line and then again from 3rd gear onwards. Forget it in the wet - 100+mph wheelspin anyone

 

[HuckingFell]

Jebus, that's some serious power!

 

[Hurdy]

Jebus, that's some serious power!

It is the torque that impresses me 510lbft = 691.5nm

The McLaren F1 only had 480lbft

 

[Cupra R]

Eeerrrrmmm, think I need to venture over to sth York's for a pass ride

Mindst, I'd probably be left needing more after experiencing that level of power haha.

How long until the next stage is completed lol

 

[Dyscontinued]

Call me Mr Pessimist, but pretty poor power curve for NOS...maybe turn it off over 5krpm too?

 

[C_ED_99]

Call me Mr Pessimist, but pretty poor power curve for NOS...maybe turn it off over 5krpm too?

If you turn the Nitrous off at 5k rpm the torque would drop from ~430 lbft to ~315 lbft.

 

[RobH]

Call me Mr Pessimist, but pretty poor power curve for NOS...maybe turn it off over 5krpm too?

Poor why would you turn it off??? Its still pulling consistantly 430bhp on NOS after 5krpm all the way to 6250rpm is it not?

Dont go to mad down at the pod and blow it up before you get those rods in there John

 

[Hurdy]

Call me Mr Pessimist, but pretty poor power curve for NOS...maybe turn it off over 5krpm too?

2 questions....

1. Why is it a poor power curve?

2. Why turn the NOS off after 5k rpm?

 

[Mitchy]

2 questions....

1. Why is it a poor power curve?

2. Why turn the NOS off after 5k rpm?

Look at the visual difference between the 2 power curves, forget the figures.

On nitrous, you are making peak power at 5250 and then it drops off considerably. Look at the more sustained power line off nitrous, it makes peak power at 6500. Okay, yes the car is still making a lot more power on nitrous so it makes sense to use the nitrous to go quicker. I think he is just saying that the nitrous power line can be better. Torque line is good though.

This to me looks like perhaps the exhaust manifold is causing a restriction. It just can't flow quickly enough top end. Either that or your ECU is backing off in 1 way or another. BTW, I had exactly this issue on my NOS Mk1 LCR I suppose you could set the controller to be more progressive so peak power comes in later?

Saying all that, as you say, the figures speak for themselves, in most areas of the rev range you are pulling significantly more power/torque than off.

 

[RobH]

Look at the visual difference between the 2 power curves, forget the figures.

On nitrous, you are making peak power at 5250 and then it drops off considerably. Look at the more sustained power line off nitrous, it makes peak power at 6500. Okay, yes the car is still making a lot more power on nitrous so it makes sense to use the nitrous to go quicker. I think he is just saying that the nitrous power line can be better. Torque line is good though.

This to me looks like perhaps the exhaust manifold is causing a restriction. It just can't flow quickly enough top end. Either that or your ECU is backing off in 1 way or another. BTW, I had exactly this issue on my NOS Mk1 LCR I suppose you could set the controller to be more progressive so peak power comes in later?

Saying all that, as you say, the figures speak for themselves, in most areas of the rev range you are pulling significantly more power/torque than off.

I think your getting the torque curve mixed up with the power curve as they pass through each other as the power stays pretty much straight after 5krpm on NOS.

Look more closely at the graph mate

 

[DPJ]

Impressive!

It's interesting the way torque falls away after the nos goes off, yet it maintains much higher torque after that compared with without nos.