Nitrous Oxide For BMW's

[///BimmerPower]

Whats up bimmer fanatics,
I was just flipping through the lates Bavarian Autosport Summer catalog and saw that they are now offering a ZEX nitrous oxide system that will boost a BMW's horsepower by 55, 65, or 75 horsepower. I was just wondering if i were to install one of these system on my 92 E36 325i this summer, would i have to upgrade engine components or even get a stronger cylinder head? Also, if any of you guys are running NOS on bimmers, is it worth it? I already like my bimmers response at the line but just want a "little" more boost. Thanks guys.

[runetang]

Well theres a few guys around here spraying... id suggest just running colder plugs, and getting a custom chip thats basicly the same as a performance chip WITHOUT THE TIMING ADVANCE. With those and an upgraded fuel pump.. I'd say you're safe to run 75shots all day.

[Scho]

You can run a 75 shot easily with no upgrades except colder plugs. Get the NGK's ...7E. I forgot the actual part number. If you have any questions, just ask. I will have a write up soon on how to install a NX wet kit on an M3 soon. I am currently working on it and waiting on parts. Until then shoot me an email or PM. "luckybmw" on this forum is running a ZEx 60 shot on a 94 325is with no known problems as of yet. He is a good resource too and knowledgeable about nitrous too!

[NOSdriver]

Don´t forget to check the cylinder-head-gasket. Maybe you´ll have to change it too

[Brad D.]

Originally posted by Scho
You can run a 75 shot easily with no upgrades except colder plugs. Get the NGK's ...7E. I forgot the actual part number. If you have any questions, just ask. I will have a write up soon on how to install a NX wet kit on an M3 soon. I am currently working on it and waiting on parts. Until then shoot me an email or PM. "luckybmw" on this forum is running a ZEx 60 shot on a 94 325is with no known problems as of yet. He is a good resource too and knowledgeable about nitrous too!

Lucky is running a 75 shot. I raced with him this past weekend.

Anyone in this thread suggesting you change engine parts doesn't know what they are talking about.

Don't listen to them. Call ZEX and ask questions.

[bmwada2ud]

I had the older bavarian kit on my 318is.It was a 50 shot system and kicked as$.

I pulled it out and sold it but I had it on my car for 2 years totalling over 80K miles.

The engine has 175K miles and still runs.

[luckybmw]

ahhhh.... the age old question. i saw that ad in bav auto and was like "NO SHIT!" to all you doubters and skeptics... would bavauto really sell it if it was "gonna blow your engine."

back to the topic at hand... the zex kit kicks ass. there are quite a few mustang owners that can vouch for me on that one (along with an expedition, but we won't get into that). it is worth every penny, along with my drag radials and 3.91 lsd. i have 96,xxx miles on my completely STOCK engine and it purrs like a dragon. with the chip issue: all you need is your stock chip. plugs: 1 stage colder. you will have to get an aftermarket intake, but any cheapo ricer intake will work. just be sure to do a compression test before installation and make sure all is good inside that sexy little i6. i'll be running a 100 shot on nitrous express jets and the zex kit when i get home (stuck on a boat). should make for some fun. if you have any further questions feel free to pm me.

[325i-ight]

Originally posted by luckybmw
ahhhh.... the age old question. i saw that ad in bav auto and was like "NO SHIT!" to all you doubters and skeptics... would bavauto really sell it if it was "gonna blow your engine."

back to the topic at hand... the zex kit kicks ass. there are quite a few mustang owners that can vouch for me on that one (along with an expedition, but we won't get into that). it is worth every penny, along with my drag radials and 3.91 lsd. i have 96,xxx miles on my completely STOCK engine and it purrs like a dragon. with the chip issue: all you need is your stock chip. plugs: 1 stage colder. you will have to get an aftermarket intake, but any cheapo ricer intake will work. just be sure to do a compression test before installation and make sure all is good inside that sexy little i6. i'll be running a 100 shot on nitrous express jets and the zex kit when i get home (stuck on a boat). should make for some fun. if you have any further questions feel free to pm me.

Please expand on that. What, do you need to get an aftermarket intake for nitrous? Also, what ricer intakes do work on a i6? Just curios I'm planning the same upgrade.

[Fissionx]

do everything said in this topic ie colder plugs etc. Also do minor mods (intake exhaust) too to make sure you free up some restrictions that will become much more restricitve after your....NOS (shutters). If you really wanna get a good nos kit, find a "wet" setup. Its much safer and easier to control. May cost more but i think its worth it (doesn't use NOS) if not go w/ ZEX. Finally be sure to add the huge NOS symbol to the hood of your car...

[luckybmw]

Originally posted by 325i-ight
Please expand on that. What, do you need to get an aftermarket intake for nitrous? Also, what ricer intakes do work on a i6? Just curios I'm planning the same upgrade.

for all the nitrous systems i have seen you need to mount the solenoids where the stock airbox sits due to hosing limitations. so you have to ditch that stock clunker. you can get an ecis or other intake, but you can also use most generic ricer intakes. i use a ractive 200mm hks super mega flow replica. only $30 and works great. i wish i was home so i could show you guys some pics of my intake. i custom made the whole thing for perfect nitrous distribution. i didn't feel comfortable running a 100 shot with the n20 nozzle mounted 3 inches from the throttle body (recommended is 6-18 inches). but on our cars without heavy modification you have to mount the n20 nozzle on the hose connecting the mass air flow sensor and the throttle body. mounting the nozzle before the m.a.s. will kill it and cost you quite a bit of money. i'm gonna do a huge write-up on making a custom intake for nitrous oxide injection (dry of course). with a 75 shot you will be fine mounting the nozzle in that rubber hose, but you will not get complete distribution. check the plugs and you will see what i am talking about. my 5 and 6 cylinders looked like they weren't getting any juice. not gonna blow anything, but you will lose power. i put together my intake with complete distribution in mind, and even on a 75 shot it made a huge difference. i am stuck on a boat off the coast of mehico right now. expect a write up in june when i get home.

happy squeezing,
luke

[luckybmw]

Originally posted by Fissionx
do everything said in this topic ie colder plugs etc. Also do minor mods (intake exhaust) too to make sure you free up some restrictions that will become much more restricitve after your....NOS (shutters). If you really wanna get a good nos kit, find a "wet" setup. Its much safer and easier to control. May cost more but i think its worth it (doesn't use NOS) if not go w/ ZEX. Finally be sure to add the huge NOS symbol to the hood of your car...

that is so rice... hahaha. unless you are going above a 100 shot a wet kit is just as good as a dry. the wet may produce a little more power, but i am pretty sure i found out nx's secret. they make their jets in a special way for better flow. not sure if they get their extra power form the jets or the "wet" effect. i'm sure the kit being "wet" plays a factor, but i am switching over to nx jets because i am going to run a 100 shot and zex doesn't make the jets i need. we'll see what happens and whether or not the nx jets make a HUGE difference or not. scho knows all the specs on the nx kits. i just like their carbon fiber bottle, it is sik i am very biast of the zex kits so just be sure to get opinions from people who use the different kits offered.

zex- myself
nos- seedster
nx- scho

there are actually quite a few people on here who use nitrous on their domestics and bmw's, but these are the people i know off the top of my head. i can't remember the guys name with the mustang doing a wheelie in his sig, but he knows ALOT.

[MPower95]

The guy w/ the mustang is MT GROOVE, I have talked to him bout n2o plenty of times and he's a great guy. He's helped me out a lot w/ info on my new system...btw...where should i order the spark plugs from?
btw the part # is: NGK-BRK7E I checked out summitracing, but could not find it on there. Anyone know who has them in stock? Thanks!

btw... how much is a compression test usually?

[BlueM3Racer]

if you run nos is there a need to change the fuel injectors even? i know you guys said there is no need to change engine parts even if you do run it. but i've also read that after a certain amount of hp in a car the injector's duty cycles are more than they can handle. but also to run larger injectors you must have a chip burned for this and then running a chip with nos is a big no-no right? just wondering. thanks

[luckybmw]

the spark plugs aren't on their website. call summit over the phone for the plugs, they usually stock them. and for the compression test... go to autozone and tell them you want a guage to do an engine compression test. should be like $20. the test itself is cake. the full writeup is in the bentley manual and shouldn't take more than a half hour. basically, you pull a fuel pump relay (i think, i don't have my bentley with me) and then pull the cylinder's plug you want to test. hook up the guage to the cylinder and crank a few times. read the max pressure and move on to the next cylinder. don't quote me on that, just giving you an idea of how easy it is. read the bentley first and it will give all the info. just as a reference all of my cylinders were between 220-225psi. as long as they are all pretty close you are good. if one is way low then you have some issues that need to be resolved before you can start using n2o.


"if you run nos is there a need to change the fuel injectors even? i know you guys said there is no need to change engine parts even if you do run it. but i've also read that after a certain amount of hp in a car the injector's duty cycles are more than they can handle. but also to run larger injectors you must have a chip burned for this and then running a chip with nos is a big no-no right? just wondering. thanks"

our engines are good up to a 100shot on all stock internals. this includes stock chip, injectors, pistons, etc. i am not aware of anyone running larger than a 100 shot on our cars with the i6 engine. i think you are getting confused with the whole chip process. most aftermarket chips will advance your timing which is very bad for running nitrous and can lead to some serious problems. if you have a CUSTOM chip burned for you they will take this into consideration and retard your timing. again, this is not neccessary unless you are running upwards of a 100 shot. i have talked to numerous people and companies on this. they "recommend" you retard your timing 2 degrees for every 50hp you get from nitrous. it is not a must until you start going over 100hp. the bmw i6 engines are bad ass and can take quite a bit. i know a few people pushing some serious hp on stock internals.

[JCM3]

Also good to get a fuel pressure gauge. When you run a dry 100 shot the only real concern is that the ZEX, NOS systems will raise the fuel pressure in conjuction w/ the nos shot. Make sure that the fuel pressure doesn't exceed 95 psi That seems to be tha limit the stock fuel pump (how I know..hmmm). What you do is hook up a fuel pressure T w/ 3/8" hose ends and splice it into the fuel feed line going into the rail. Add a gauge and connect the 100 shot then you DISCONNECT the nitrous line going into the intake (have someone hold this away from you and their face) and press the wide open throttle switch and watch the fuel pressure rise on the gauge. I only run a 75 shot (for about 2 years) and on a dry kit the fuel pressure is at ~80psi. For a 100 it might be into the upper nineties. Any questions ask I have both a dry and wet system on my cars.