Question about NOS

[Jay 535i]

My car is a 1990 535 with an auto tranny and 140,000mi on the clock. Will NOS kill it?

[granit_silber]

My car is a 1990 535 with an auto tranny and 140,000mi on the clock. Will NOS kill it?

I bet the M30 can handle it. But I'm not so sure the tranny could handle the instant rush of hp. But heck, what do I know?
-ashley

[dacoyote]

My car is a 1990 535 with an auto tranny and 140,000mi on the clock. Will NOS kill it?

Not if you get ground effects... paint it candy apple green.

:-)

Charles

[Jay 535i]

I bet the M30 can handle it. But I'm not so sure the tranny could handle the instant rush of hp. But heck, what do I know?
-ashley

Yeah, I'd think the drivetrain is more of a concern than the motor. I know the auto tranny in my car didn't appear in more-powerful cars, so it may not be up to the job. That's why I'm asking the pros.

Also, is combining NOS with an EAT chip a no-no? The idea of having an extra 50-75hp for 5-15 seconds at a time for just ~$1000 sounds perfect to me.

[DanDombrowski]

I don't think too many people here have run NOS, so you'll get some speculation, but if I were you, I would mabye ask some of the 3 series people or even non-bmw people that have run it.

As great as our cars are, the engine won't last forever, and NOS certainly won't help it. It probably won't kill it outright, but if its your only car, only you can decide if its worth the risk of not having a car.

[Jay 535i]

I don't think too many people here have run NOS, so you'll get some speculation, but if I were you, I would mabye ask some of the 3 series people or even non-bmw people that have run it.

As great as our cars are, the engine won't last forever, and NOS certainly won't help it. It probably won't kill it outright, but if its your only car, only you can decide if its worth the risk of not having a car.

Well, I certainly don't want to kill the car. My understanding is that most engines can handle a few seconds of NOS without any ill effects, but that you could lunch your tranny, driveshafts, etc. if you're not careful. I'll only go ahead if I can get some reassurance that I'll be fine. Otherwise I'll just keep the $1000 in the M5 jar

[632 Regal]

NOS is cool, the main cause of its failures is not enough fuel being delivered with the NOS since that tricks the engine into thinking it has more air you need more fuel to burn ,,, or it will go lean...and that only takes a couple seconds to cause a melt down.

[Jay 535i]

NOS is cool, the main cause of its failures is not enough fuel being delivered with the NOS since that tricks the engine into thinking it has more air you need more fuel to burn ,,, or it will go lean...and that only takes a couple seconds to cause a melt down.

Thanks. Can anyone vouch for whether or not this is a problem with MY car?

[632 Regal]

this is a problem with ALL engines. Have to somehow be able to deliver enough fuel.

Thanks. Can anyone vouch for whether or not this is a problem with MY car?

[DanDombrowski]

I think what he's asking is will his DME and fuel injectors be able to compensate enough to run, say, a 50 shot without modifications, or would he need to upgrade other parts when installing NOS?

If thats what you're asking, well, again, I don't know what to say because I've never run NOS. Out at the track, I've seen a few guys in 325is's running NOS, but they wouldn't divulge how much they were spraying. At the very least, if I were installing NOS, I would run an A/F ratio gauge, so add that to your cost if you're doing a cost estimate on it.