Nitrous (N2O) Boosted BMW 335: Full Review

[moranor@axis]

thanks twins i did not think the cost of filling the nano would be so high if i do this i definitely want the nano... i think the bottle heater is just a crude patch job...

i am also looking at getting the equipment to refilling the N2O at home to bring the running costs down... looks like ill have to see how much a high pressure refill system will cost also...

now im wondering if i had a high pressure pump... could i not fill the nano with N2O? im not sure if N2O can take such pressure... my guess is no because it is not normally stored at such high pressure, but it could be that the N2O canisters just cant take the pressure and they dont use such high pressures to keep filling costs down...

 

[Twinz]

...the N2O canisters just cant take the pressure and they dont use such high pressures...

Yebo :thumb:

 

[///MOS1TED]

TWINZ that was a brillant write up and information sharing , i myself learn alot from it and i can only imagine that huge grin on your face , nice one buddy

 

[moranor@axis]

...the N2O canisters just cant take the pressure and they dont use such high pressures...

Yebo :thumb:

are you saying you can compress N2O to 4500psi? ill look into it further, but if you have already looked at it please share the info

 

[Twinz]

@ ///Mos1ted...Thanks buddy for the feedback. I do more often.

@Moranor...I am saying that the N20 bottle CANNOT handle 4500psi and in any case for the nitrous to be released/flow optimally, the N20 bottle pressure only needs to be between the 850 - 1000psi range. And that is what the Nano system does...it keeps the pressure in the N20 bottle in that sweet spot.

 

[moranor@axis]

im thinking if possible i will fill the Nano bottle with N2O it should increase the capacity a little and then i dont have to have another cylinder with nitrogen in I just need to see if there is any problem with compressing N2O to 4500psi

 

[Twinz]

Oh okay, I hear you. Drop Nano an email. They sell the Nano N20 bottle as well. Perhaps they can give us an expert opinion :thumbsup:

 

[George Smooth]

I have read this thread at least once a month from when it went up and am very intrigued with the technology that surrounds it as well as the simplicity.
What are your intentions with the kit when you go RB if you are still? Knowing you going to run out of fuel have you considered one of these?

If you going to be selling the kit let me know :ka-boom: Maybe I have a shot of being first in the tens with it.

 

[Twinz]

Hi George. I had discussions with F boosted and NX about the fuel enrichment kit in december last year. FB said he would try it but i have not seen his review. Whats great is it accomodates meth and or fuel and an NA or boosted application.

Yes, i was quite keen to try the fuel enrichment kit. The issue is my tuner does not want me to run a nozzle higher that 35. We have tried 45 and the results were spot on in terms of the hp gains for the nozzle. But the car tends to run lean at higher rpms when boost is raised. But on the 35 jet the meth and racefuel keep the car in the sweet spot.

But you guys in GP have so much more experience with nos. I am probably the only nos 335 car in the cape with no one really to benchmark or share testing/ experiences with.

After the successful install of the nitrous kit and the fact that the car was responding so well to it we have decided not to go with the RB turbos even though i think the turbos is more cost effective in the long term.

I am still enjoying the nitrous and with the new JB safety features i am even more comfortable when triggering N20.

 

[George Smooth]

Hi George. I had discussions with F boosted and NX about the fuel enrichment kit in december last year. FB said he would try it but i have not seen his review. Whats great is it accomodates meth and or fuel and an NA or boosted application.

Yes, i was quite keen to try the fuel enrichment kit. The issue is my tuner does not want me to run a nozzle higher that 35. We have tried 45 and the results were spot on in terms of the hp gains for the nozzle. But the car tends to run lean at higher rpms when boost is raised. But on the 35 jet the meth and racefuel keep the car in the sweet spot.

But you guys in GP have so much more experience with nos. I am probably the only nos 335 car in the cape with no one really to benchmark or share testing/ experiences with.

After the successful install of the nitrous kit and the fact that the car was responding so well to it we have decided not to go with the RB turbos even though i think the turbos is more cost effective in the long term.

I am still enjoying the nitrous and with the new JB safety features i am even more comfortable when triggering N20.

I haven't played with nitro's for twelve years now but am really getting excited about the idea.
What kind of power gains on the wheels did you see with the 35 and 45 and at what maximum are you holding the boost?
Do you have boost overshoot problems when you activate the nitros? My concern with the RB's is that the car has a hard time to control boost due to the small waist gate so using the gas might make this even harder.
I was thinking of a 5000-6500 window. The car makes too much torque below that.

 

[Twinz]

Controlling the power is our biggest enemy. The car can make tons of power but to get it down how you want it is not so easy.

In terms of some of your questions, I will get the info out of ART tomorrow.

What I can commit to say now is:
On the stock map (no JB map) and nitrous activated we got almost exactly with a .35 nozzle (35hp) or with the .45 nozzle (45hp). So switching on the lowest map on the JB would increase the power from there and the higer you go with the maps. The respective NX nozzles are very accurate. I see Hotrod is running the .21 Nozzle and just up the boost as he requires. That is also a good way to control the power and judge how the car responds to the nitrous.

We experimented (on the dyno) with the JB4s highest current race map 7, which is about 16.5psi and the .35 nozzle, we had zero traction or any attempt to get a decent dyno reading. We literally have to go down to 5 or 2 to get a decent run.

So managing power, boost and N20 is best achieved with a custom tuned map (map 6) especially for your drag purposes.

I currently run the (self-tune) map 5 on a 35 nozzle. The highest boost I have seen on the boost control is spikes of 18.5psi but sustained boost of 16.5. But I see some guys have lifted the boost on the self tune map to 17psi. My nitrous flow is also now triggered and controlled by the JB instead of the maximiser controller. The JB like the other piggys can now control the nitrous and meth together and switch these on when and how you require.

But the one thing I can say very confidently. I have not had any problems with N20 other than having to fill up too often. Great installation is the key and being conservative with the nozzles. Their is no (Vtec) kick in when the nitrous flows, it is just smooth. Excuse the punt. :=):

It is only when the nitrous is off when you realise power is missing. I hope my comments help a little.

 

[rick540]

Twinz that is an awesome writeup! Very well written and really interesting, what are you doing next?

 

[Twinz]

Thx rick...Hey man...i dont know what to do anymore...i am experimenting with the M3 suspension bits, so working on that review.

May turn my attention to the 120d. It only has the chiplogic tune now but otherwise completely stock...out of motorplan...paid up as well, so that could be a fun new project.

 

[George Smooth]

Thx rick...Hey man...i dont know what to do anymore...i am experimenting with the M3 suspension bits, so working on that review.

May turn my attention to the 120d. It only has the chiplogic tune now but otherwise completely stock...out of motorplan...paid up as well, so that could be a fun new project.

Is your 120d still one first set of cats?

 

[Twinz]

Yip cats still in place but the car pulls crazy strong with just the tune as one of our 335 forum members comented when we did a morning drive recently...!
It is also a blast on the track with just the right amount of power to negotiate the bends and straights.

 

[George Smooth]

Yip cats still in place but the car pulls crazy strong with just the tune as one of our 335 forum members comented when we did a morning drive recently...!
It is also a blast on the track with just the right amount of power to negotiate the bends and straights.

Cool we did development work when the first 320d came out on our own E46 and after 20,000km of huge power it melted the cats and they where blocked due to high EGT. Since then Chip Logic diesel files are mildly tuned (in relation to competitors) within strict safety and longevity parameters.

 

[George Smooth]

Pulled the trigger on this including the stand alone fuel tank. Will let you know how it goes.

 

[Rennzport]

Thats great G
I'm sure you will be as satisfied as Twinz, with the nos setup

Keep us posted

 

[2LV2]

Brilliant!!!

Very Helpful.


raise:

 

[Karthik]

This thread is simply insane , lovely write up , dunno how I've missed this all this time , have to complement you on your awesome job well done . The attention to detail is spot on raise:raise:raise: