Nitrous Oxide
Rennlist Member
Joined: Jun 2005
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From: Columbus OH
I'm not gonna argue that it's pointless on a 996, but if someone wanted to put together a kit correctly it could be done with very few negative side effects. There's actually a company out there making Nitrous kits for E46 M3's now. They've taken all of the guess work out of it and put together a really nice kit. You won't see me installing it on my car anytime soon but for someone who wants a cheap blast of power every now and then it's not a bad solution I suppose.
Andy
Drifting
Joined: May 2008
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From: Cali
Race Car
Joined: Aug 2006
Posts: 4,978
Likes: 10
From: San Antonio, TX
There is some things to consider.
Nitrous is instant!
Supercharging and using turbos is gentler on the engine becuase they make their 125 hp increase (for the sake of debate) usually at the peak of the RPM whereas nitrous could make 125 hp in ANY RPM range!
So, if you do not have any safeguards in place for RPM limiting the nitrous activation, you could spray a 125 shot at 1000 RPM!
I am fairly sure for the sake of debate that spraying a 125 hp shot of nitrous into a M96 at off idle will destroy something.
Another thing. If you accidently hit the nitrous at say 1000 RPM, that would mean the cylinders are roughly injesting 7 times more nitrous than they would receive at 7000 RPM because nitrous flow is constant at a given rate dependent on temperature of bottle and pressure.
That would probably destroy something.
Nitrous is instant!
Supercharging and using turbos is gentler on the engine becuase they make their 125 hp increase (for the sake of debate) usually at the peak of the RPM whereas nitrous could make 125 hp in ANY RPM range!
So, if you do not have any safeguards in place for RPM limiting the nitrous activation, you could spray a 125 shot at 1000 RPM!
I am fairly sure for the sake of debate that spraying a 125 hp shot of nitrous into a M96 at off idle will destroy something.
Another thing. If you accidently hit the nitrous at say 1000 RPM, that would mean the cylinders are roughly injesting 7 times more nitrous than they would receive at 7000 RPM because nitrous flow is constant at a given rate dependent on temperature of bottle and pressure.
That would probably destroy something.
Rennlist Member
Joined: May 2005
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Tippy, I think we're basing this conversation on the assumption of a properly designed and installed nitrous system. Your examples are cases of neither. A progressive control injects nitrous at varying levels depending on the condition (rpm, load, etc). RPM switches were installed to prevent people from "accidently" spraying too early.
In a similar fashion, if you ran a turbo without adequate boost control you'd destroy an engine just as quickly...
In a similar fashion, if you ran a turbo without adequate boost control you'd destroy an engine just as quickly...
Race Car
Joined: Aug 2006
Posts: 4,978
Likes: 10
From: San Antonio, TX
Tippy, I think we're basing this conversation on the assumption of a properly designed and installed nitrous system. Your examples are cases of neither. A progressive control injects nitrous at varying levels depending on the condition (rpm, load, etc). RPM switches were installed to prevent people from "accidently" spraying too early.
In a similar fashion, if you ran a turbo without adequate boost control you'd destroy an engine just as quickly...
In a similar fashion, if you ran a turbo without adequate boost control you'd destroy an engine just as quickly...
It was just a warning what could happen.
AutoX
Joined: May 2016
Posts: 14
Likes: 1
It's totally clear few know anything about nitrous, I hear "add a supercharger or a turbo" first of all, a supercharger takes horsepower to make more power and adds a lot of heat put a hell of a lot of stress on a motor , a turbo adds heat takes a lot of tuning and on regularly aspirated engine running 11 1/2 to 1 compression that's not such a good idea , nitrous is not the big bad wolf most think it is, I have had wet and dry systems on numerous cars including a mini Cooper yes start small work your way up, most were v8s but that mini we started with 45hp on the mini made a sizable difference in power we put at least 10 bottles before we started moving up then we just wanted to see how far we could take it we had that thing all the way to 75 hp a little itty-bitty mini Cooper (non S) we could not blow that thing up in it moved I mean that little car will get up and go I ordered a Dynotune nitrous kit for my 996 and I know for a fact it will not blow the engine up as everybody says it will keep things within reason you'll be fine I'm going with the wet system then probably going to run at 75hp
Last edited by Porscheismoving; May 17, 2016 at 11:56 PM. Reason: Spelling
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Joined: Dec 2013
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From: Edmond, OK
It's totally clear few know anything about nitrous, I hear "add a supercharger or a turbo" first of all, a supercharger takes horsepower to make more power and adds a lot of heat put a hell of a lot of stress on a motor , a turbo adds heat takes a lot of tuning and on regularly aspirated engine running 11 1/2 to 1 compression that's not such a good idea , nitrous is not the big bad wolf most think it is, I have had wet and dry systems on numerous cars including a mini Cooper yes start small work your way up, most were v8s but that mini we started with 45hp on the mini made a sizable difference in power we put at least 10 bottles before we started moving up then we just wanted to see how far we could take it we had that thing all the way to 75 hp a little itty-bitty mini Cooper (non S) we could not blow that thing up in it moved I mean that little car will get up and go I ordered a Dynotune nitrous kit for my 996 and I know for a fact it will not blow the engine up as everybody says it will keep things within reason you'll be fine I'm going with the wet system then probably going to run at 75hp
AutoX
Joined: May 2016
Posts: 14
Likes: 1
Nitrous
Ok you get to be the bully that's cool, no my 996 is not a rocket ship , but a little boost in power for under a grand is not a bad thing to me I have done the things to make sure it holds together LN update, and no a mini is no where the same as a M96 I was just using that as a example, the mini has a cheap cast piston non forged part in the whole motor ,Porsche uses good engine parts (forged)other than the IMS issues that flat 6 is a stout motor will take it, I might just want that 75hp hit on track day on that long straight or little hit just to put a smile on my face if that's ok with you, by the way know it all, nitrous builds much more torque than hp and nitrous likes compression, so go spend 10k plus on a turbo or supercharger and I bet it will blow up a lot faster than nitrous each is there own, unless you have a TT and owe more than a house on it...mine is paid for 100%
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Rennlist Member
Joined: Dec 2013
Posts: 4,777
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From: Edmond, OK
Lol, I've already blown an '01 E55 engine adding a supercharger, I don't really care to go through that experience again. I agree extra torque is always nice, and yes I was being smart ***, but depending on which model year you have these engines aren't exactly stout. I'm not saying they are a ticking time bomb but Porsche was definitely trying to save money in this era and these engines have some real weaknesses besides the IMS (cylinder #1). I would make sure you research them pretty thoroughly before you push them harder than they were designed to go. Or, report back to us in 20,000 miles and let us know how it turned out. Either way, best of luck to you.
AutoX
Joined: May 2016
Posts: 14
Likes: 1
Nitrous vs boost
That's my point I hear others on all the Porsche sites that say get a supercharger or a turbo it's not as hard on a motor as nitrous and that is false, a small shot of nitrous (as long as the fuel is there lol) is much safer than any form of boost on a high 11.1 C/R motor all day long, one more misinformation is a dry system is safer no no no! You're relying on your injectors to add more fuel and they are already close to 100% duty cycle, a wet system right off the inj fuel rail test fitting is the best and safest way to go, I just want to clear up a lot of BS I see on here,
Rennlist Member
Joined: Aug 2013
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From: NW Suburbs of Chicago
AutoX
Joined: May 2016
Posts: 14
Likes: 1
Lol I always seem to be 8 years behind lol no I just was reading what others have said and noted a lot of false info and figured I had something to bring to the discussion, why not? We all think about more power it's all in fun no matter how old it is it's still relevant
Rennlist Member
Joined: Aug 2013
Posts: 235
Likes: 5
From: NW Suburbs of Chicago
Lol I always seem to be 8 years behind lol no I just was reading what others have said and noted a lot of false info and figured I had something to bring to the discussion, why not? We all think about more power it's all in fun no matter how old it is it's still relevant
I agree there is a lot of misinformation in the world about nitrous; it certainly has its time and place. I do think its somewhat telling that it hasnt been brought back up (that Im aware of) since this thread. Not sure if thats because it hasnt really been done on a 996 or if its because anyone who has done it hasnt/wouldnt/wont post here?
Oh, and since you are a new joiner, welcome! Lots of good info here, and (mostly) helpful people
Banned
Joined: Mar 2010
Posts: 7,697
Likes: 32
From: Chicago
Awe damn, as soon as I heard a redneck hillbilly, I saw the train wreck coming.
But seriously most get the 996 NA for circuit style racing. I've had a couple nitrous setups in the past and it really required some setup that would be ideal for drag strip IMO.
Sure they have remote valve openers, purge systems, and bottle warmers to get the pressure up but all of these require some user input and isn't instantaneous.
I think most that are into drag racing get the 996tt where it's easy to make over 700hp all day long. The really serious ones are all in the 1k club these days.
You can see that all it takes is one to blow up one motor only before being in the 996tt territory which has a lot more beefy engine. Then it easily becomes hindsight, would've should've scenario and reflection.
More power to you if you can inject a 100-125 shot consistently on the m96 without suffering any damages. Please keep us updated on your escapades as we can all learn something whether good or bad. I certainly didn't want to gamble and take one for the team considering replacement costs. It sounds like though you got bigger ***** than most here. Good luck.
But seriously most get the 996 NA for circuit style racing. I've had a couple nitrous setups in the past and it really required some setup that would be ideal for drag strip IMO.
Sure they have remote valve openers, purge systems, and bottle warmers to get the pressure up but all of these require some user input and isn't instantaneous.
I think most that are into drag racing get the 996tt where it's easy to make over 700hp all day long. The really serious ones are all in the 1k club these days.
You can see that all it takes is one to blow up one motor only before being in the 996tt territory which has a lot more beefy engine. Then it easily becomes hindsight, would've should've scenario and reflection.
More power to you if you can inject a 100-125 shot consistently on the m96 without suffering any damages. Please keep us updated on your escapades as we can all learn something whether good or bad. I certainly didn't want to gamble and take one for the team considering replacement costs. It sounds like though you got bigger ***** than most here. Good luck.