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Nitrous to spool turbo?

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Old Feb 11, 2004 | 09:37 PM
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EVOlunchbox's Avatar
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Question Nitrous to spool turbo?

How do you use nitrous to spool a turbo faster? I hear about this but don't understand it, can anyone fill in?
Old Feb 11, 2004 | 09:56 PM
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i believe its because nitrous makes more hp thru more fuel and air in the combustion chamber. this increases the exhaust gasses thus pushing more exhaust into the turbo compressor

Last edited by Monkey; Feb 11, 2004 at 10:01 PM.
Old Feb 11, 2004 | 10:00 PM
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hmmm...
Can someone verify?
Old Feb 11, 2004 | 10:02 PM
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Hmm, I have always thought of it in a different way. When nitrous is used to spool a turbo it is used in the lower band of rpms because nitrous adds a ton of torque down low cause your engine to rev much quicker and with a lot more torque causing the you to get into the rpm range of the turbo much quicker, after the turbo is spooled most stop the flow of nitrous.

Jason
Old Feb 11, 2004 | 10:14 PM
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I was always told never to run nitrous in low RPM's... Wouldn't this hurt the motor?
Old Feb 11, 2004 | 10:19 PM
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youre typically not supposed to run it below like 2500-3000rpms, but if youre in first gear and at WOT (as most nitrous systems make you do before it arms) your engine is acclerating very quickly and will not do as much damage as say 3rd gear at 2000rpms
Old Feb 11, 2004 | 10:20 PM
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I believe this is on a NA motor and one that is not built because of all the torque it can make down low. If you need nitrous to spool your turbo chances are you are running a ton of boost and a ton of power on a very built motor, hence the nitrous will not cause damage.
Old Feb 12, 2004 | 06:42 AM
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This is becoming popular in the UK. As we are not all after huge power figures, we use the N2O in the lower segment of the rev range (2000 to 4500rpm) to make the engine produce more torque (and therefore more exhaust gas) to spin the turbo up earlier. A lot of the kits here enable you to graduate the flow of the N2O and because your only using small amount (25-50bhp) you can use it quite early. Basically you feather the N2O in (between say 2000-2500rpm) and then when the turbo is at full boost (much earlier than without) feather it back out (say 4000-4500rpms). I suppose you could have a system that is boost dependent. Have the system trigger at around 2500rpm and then turn off when the boost is full.
Old Feb 12, 2004 | 10:55 AM
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Spooling the car with N2O wont be of an advantage until you are using one hell of a monster turbo. I have not seen an evo turbo kit that would be big enough make full advantage of this. So unless you are looking at a built motor and a custom turbo setup I would just leave this to the pro drag racers.
Old Feb 12, 2004 | 11:12 AM
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Anti Lag system!!! You will be a pioneer here in the US!!!
Old Feb 13, 2004 | 06:39 AM
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BadBoyBeltran is right. Get yourself a Motec standalone ECU (or any that offers anti-lag) and you will be well away. The problem with Anti-lag is that it will shorten the life of your turbo. Or you could get a strocker kit and run it at high comp. ratio. This will help the off boost performance and make the turbo spool up much quicker. Higher comp. dose mean a lower top end performance though. Its all a compromise!
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