The Nitrous RR! What power?

[Russ_leeds]

Good result m8 bet your well pleased with that.

yeah my mate was there in his black megane sport 225 with red mirrors n he was telling me bout that lol.

[Hurdy]

I'm glad the 20.3% of non-believers were wrong

[vRS Carl]

How much was the kit Hurdy & where did you get it?

That has surely got to be the best bang for buck after stage 1 map.

[Sunglasses Ron]

I'm glad the 20.3% of non-believers were wrong

I wasn't to far out bud..  Can't wait to hopefully see it run on Friday.. 

[gazbutS3]

I'm glad the 20.3% of non-believers were wrong

I wasn't to far out bud..  Can't wait to hopefully see it run on Friday.. 

Friday????

[john_o]

fantastic John  
with 500lbs/ft at 3500rpm Im surprised you can drive it anywhere at all  
surely thats going to kill the rods/pistons more than high rpm?

did you log the dyno run too , for things like timing etc ? just out of interest

well done that man  

[Hurdy]

fantastic John  
with 500lbs/ft at 3500rpm Im surprised you can drive it anywhere at all  
surely thats going to kill the rods/pistons more than high rpm?

did you log the dyno run too , for things like timing etc ? just out of interest

well done that man  

Ah, but remember it only has that power if I turn the nitrous on. Normal day to day traffic it is turned off and when it is on it only activates when using full throttle (unless I change the settings)

AFR was 11.5 and max timing retardation so far has been under 4. Boost, EGR and rail pressures are all well within normal running parameters

[Hurdy]

Just looked on www.letstorquebhp.com and put my bhp and weight in and got these back....

Power at Flywheel (BHP) :  440
Weight without Driver (KG) :  1350
Power to Weight Ratio (BHP Per Ton) :  331.16
0 - 60 (Secs) :  4.22
0 - 100 (Secs) :  8.70
60 - 100 (Secs) :  4.48
Quarter Mile (Secs) :  12.38
Terminal Speed (MPH) :  119.28
Drag Strip Quarter Mile (Secs) :  12.18
Drag Strip Terminal Speed (MPH) :  121.46

Not far off what I did with the GPS performance box

[Janner_Sy]

fantastic John 
with 500lbs/ft at 3500rpm Im surprised you can drive it anywhere at all 
surely thats going to kill the rods/pistons more than high rpm?

did you log the dyno run too , for things like timing etc ? just out of interest

well done that man 

Ah, but remember it only has that power if I turn the nitrous on. Normal day to day traffic it is turned off and when it is on it only activates when using full throttle (unless I change the settings)

AFR was 11.5 and max timing retardation so far has been under 4. Boost, EGR and rail pressures are all well within normal running parameters

talk us through activating it then.  is it pretty much on standby all the time, and when you suddenly decide you need to rinse somebody can you litterally just flick a switch on and off you go, or do you need to stop and activate it??

[Hurdy]

Flick a trigger guard and flick the switch and it is permanently armed (no need to stop and turn off/on etc). I can use it straight away, but won't get full power from the bottles until they are warmed up. It takes 5 mins to warm the bottles through, until then you get between 80-100% of the power, depending on the bottle pressure.

I can also turn the heaters on and leave the nitrous in standby.

The nitrous can be programmed to be brought in at any revs in any gear and at any % of full power from 20% upwards. I can bring the power in steadily over 5 stages or give the engine an instant hit in one gear and then back the power down. There are 4 programmable memories in the system and each one can be set for different utilisations. For example, I can have one for track, two for the 1/4 mile and one for a dyno test.

The system constantly measures AFR's, nitrous and fuel flow pressures and if any are outside operating specifications, then the nitrous sytem shuts down.  That is about as simple as I can explain it really.

[Janner_Sy]

so the trigger arms it, then i guess there is a seperate "go faster button".  do you just leave it in stand by then??  or is that not good for the system

[Hurdy]

The nitrous is operated automatically by throttle input. The point at which the throttle activates the nitrous can be programmed, so if you like you can have it at WOT like I have or on any % of throttle. Obviously it tends to work best when WOT You can leave it in standby, but you run the risk of forgetting and leaving it heating the bottles when the ignition is off.....and that will flatten the battery.

[poko]

something doesn't calculate right to me.

You have 340WHP , and that is a wheel dyno.

on our car powertrain loss is around 10-12% at max.

so going by that route , you are suppoused to see no more than 380bhp at the flywheel.

what is the compensation built into that dyno ?

also , can you please tell me if the data is raw or SAE ?

[wigit]

just been catching up on this thread and crongrats john, you are of course insane, but love how you go about what you do fella 

[tony_danza]

I didn't know you could have such a complex, yet flexible system for applying the NOS - sounds like you invested wisely, rather than some chav blast it all in system.

I'm impressed. And want a go.  

I played with a mate's MKIV at Inters running around 420bhp on the day (usually is around 500) and whilst my launching was duff using a manual 'box and in a car I'd never driven, when it got going it was fricking hilarious!! With DSG's LC it'd be manic.