Nitrous supercharged install for w203
Former Vendor of MBWorld
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From: Carrollton Texas
clk and e coupe
I agree, i wouldn't tune it. Its not needed for a 35hp shot
I doubt you will need to change plugs but asking mfg as,suggested
I agree on nitrous gauge and allso a fuel pressure gauge is mandatory.
I doubt you will need to change plugs but asking mfg as,suggested
I agree on nitrous gauge and allso a fuel pressure gauge is mandatory.
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From: DC Metro Area
2007 Mercedes E550
Thanks for your help! I'm also reading that some people install the nozzle on the cold side of the intercooler tube (as opposed to before TB and SC). Thoughts??
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From: DC Metro Area
2007 Mercedes E550
Thanks so much for your help! There is so much conflicting info on the Internet that it hard to follow.
In terms of the various plumbing connections, would you use Teflon tape, Teflon paste, it blue lock tight? Read in several instructional videos that the Teflon tape can cause damage?
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From: DC Metro Area
2007 Mercedes E550
Assuming "AN" fitting is the fuel/nitrous nozzle that shoots mixture into supercharger. Put nothing on the threads?
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Former Vendor of MBWorld
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From: Carrollton Texas
clk and e coupe
AN fitting are a type of thread. Like ntp. You probably have both types of fitings throughout the system.
Purge valve, soleniod what ever you want to call it. I would install it. You use that to bleed the air out of the nitrous lines. Thats safer then bleeding it through the motor. Also you can see you got all the air out when you use a soleniod. Helps prevent a nitrous bsck fire.
Purge valve, soleniod what ever you want to call it. I would install it. You use that to bleed the air out of the nitrous lines. Thats safer then bleeding it through the motor. Also you can see you got all the air out when you use a soleniod. Helps prevent a nitrous bsck fire.
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From: DC Metro Area
2007 Mercedes E550
AN fitting are a type of thread. Like ntp. You probably have both types of fitings throughout the system.
Purge valve, soleniod what ever you want to call it. I would install it. You use that to bleed the air out of the nitrous lines. Thats safer then bleeding it through the motor. Also you can see you got all the air out when you use a soleniod. Helps prevent a nitrous bsck fire.
Purge valve, soleniod what ever you want to call it. I would install it. You use that to bleed the air out of the nitrous lines. Thats safer then bleeding it through the motor. Also you can see you got all the air out when you use a soleniod. Helps prevent a nitrous bsck fire.
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From: Austin, TX
2005 C230K(sold), Mk7 Jetta
But the throttle body is just before the supercharger, no? And the plastic black tube I reference in the pic leads into TB? So nitrous would therefore go into S. Charger? Or am I mistaken?
In every instruction manual it has been suggested to put nozzle before TB. Plus my conversation with techs at nitrous express have concluded the same. I'm emailing nitrous express as well so I get it in writing just to be sure. Have also read that nitrous supply may be before or after SC, as long as after MAF
In every instruction manual it has been suggested to put nozzle before TB. Plus my conversation with techs at nitrous express have concluded the same. I'm emailing nitrous express as well so I get it in writing just to be sure. Have also read that nitrous supply may be before or after SC, as long as after MAF
This is the "throttle body" you have in your blueprint. The one you are tapping into is the one after the SC. Just follow the piping and you'll figure it out.
I think it does not really matter whether you put the nozzle before or after the throttle body since it's gonna be wide open anyway
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From: Miami, FL
2003 CL 600
Placement is fine, on my supercharged Cobalt I ran the nitrous nozzle in the coupler before the TB, before the supercharger and intercooler and all. Worked just fine. On my 350z and on my dad's truck setup, the nozzles are in spacer plates behind the TB for ease of install and removal, but same basic placement and work perfect. On my CL I plan to tap into the Y pipe between the intercooler outlets and the TB.
You should notice a nice performance increase from the added cooling effect on a boosted car, I know a small 50 shot on the cobalt engine (supercharged 2.0L) was good for almost 60whp because of the added chemical intercooling effects.
You should notice a nice performance increase from the added cooling effect on a boosted car, I know a small 50 shot on the cobalt engine (supercharged 2.0L) was good for almost 60whp because of the added chemical intercooling effects.
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From: DC Metro Area
2007 Mercedes E550
Placement is fine, on my supercharged Cobalt I ran the nitrous nozzle in the coupler before the TB, before the supercharger and intercooler and all. Worked just fine. On my 350z and on my dad's truck setup, the nozzles are in spacer plates behind the TB for ease of install and removal, but same basic placement and work perfect. On my CL I plan to tap into the Y pipe between the intercooler outlets and the TB.
You should notice a nice performance increase from the added cooling effect on a boosted car, I know a small 50 shot on the cobalt engine (supercharged 2.0L) was good for almost 60whp because of the added chemical intercooling effects.
You should notice a nice performance increase from the added cooling effect on a boosted car, I know a small 50 shot on the cobalt engine (supercharged 2.0L) was good for almost 60whp because of the added chemical intercooling effects.
I'm only going to run a 35 lb shot, mostly to avoid wear on engine. Also after speaking with Euroxharged.com, I can still run an aggressive tune (not when nitrous activated). If I went above 35, would have to retune and lower timing and other parameters. So the 35 lb shot should be the best of both worlds!
A couple more accessories that I'm probably going to add once initial install is complete:
-in cabin fuel pressure gauge (to ensure proper fuel pressure to avoid engine explosion)
-purge valve, because looks fun and reduces risk of nos backfire
-remote bottle opener, so I can activate nos in cabin!!
It's going to be fun to see how the nos works in the supercharged application, as well as with my high flow exhaust-running high flow headers, high flow cat, k&n air filter, and high flow cherry bomb muffler!!
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From: DC Metro Area
2007 Mercedes E550
Odd development
Well I had purchased a 5 lb bottle nitrous express proton plus kit from the seller "Redline Street Performance" on Amazon. My kit never arrived and seller disappeared. Amazon promptly refunded my money. So strange because my Amazon account still says it is being shipped.
Anyways I bought another kit, but this time the kit with the 10 lb bottle. Plan to install the bottle in the spar tire well, of course unhooked given the laws in my state :-)
stay tuned for details and the first ever complete nos diy of a 1.8l w203...
Anyways I bought another kit, but this time the kit with the 10 lb bottle. Plan to install the bottle in the spar tire well, of course unhooked given the laws in my state :-)
stay tuned for details and the first ever complete nos diy of a 1.8l w203...
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From: Miami, FL
2003 CL 600
You'll be better off with the 10lb bottle anyway, there are delivery issues with almost every other size, the 10lb will be more efficient when it's less than half full and you'll have less chance of getting gaseous nitrous in the pickup tube as it gets low.
Former Vendor of MBWorld
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From: Carrollton Texas
clk and e coupe
i have a nitrous express kit on mine. My car has a kleemann tune but not for the nitrous. I just run race fuel when i spray it and never had an issue running a 75 shot.
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From: DC Metro Area
2007 Mercedes E550
Nitrous install complete!
Just completed my nitrous install on my 1.8l w203, the worlds first NOS install for this car.
Used 35 lb shot, and tested tonight. The results were a little underwhelming, so I will have to check bottle pressure i guess.
More details to come!
Used 35 lb shot, and tested tonight. The results were a little underwhelming, so I will have to check bottle pressure i guess.
More details to come!
Thread Starter
MBWorld Fanatic!
Joined: Aug 2015
Posts: 1,059
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From: DC Metro Area
2007 Mercedes E550
Thread Starter
MBWorld Fanatic!
Joined: Aug 2015
Posts: 1,059
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From: DC Metro Area
2007 Mercedes E550
Bought it
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Joined: Jun 2010
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From: tennessee
s320
Yes I bought it from nitrous oxide systems,there are two,one for low fuel pressure engines,the other for efi.I used a sniper system for 125 hp wet shot.Be sure and use a relay from battery or solenoids can burn out.I mounted tank in trunk,drilled hold for wires,I used a toggle switch under arm rest cover.I tapped fuel from shracder valve on fuel rail.I deleted cats.
