Okay here is my problem, I'm going to purchase a nitrious oxide kit for my limited, the person selling it tells me I will not need to tune my car just install it, fill the bottle, and away I am. But other people I've emailed tell me a tune is essential. I'm confused I dont want to pay someone $500-$600 to tune it if it doesnt need to be tuned. What are your thoughts??? any advise would be great!

 

If may be a dry sytem which can just hook up. Many of the lower powered kits are dry systems and can be just hooked up. More powerful system sometimes use an extra injector or other means to richen the fuel. I think most 75hp shots are dry systems and you can just hook them up. do your research first and contact the manufactures.

 

Hey Lantana, the system I'm looking at getting is a wet system, it has jets that range from 50hp, 75hp 100hp and 125hp, I'm going to set it up to 75hp of course (i want to keep my engine lol) but the person selling it has a legitimate store and tells me no tune required, but a garage that does refills tells me he must tune it. So I'm getting two sets of infromation and I dont know who to trust It's hard when your young and want to do up your car, and pennys are hard to come by lol I want to spend my money wisely!

 

He wants to sell you a kit! He was no experiance with the crossfire. Jut get it done with the shot 75 and record the dynos with fuel/air ratios to send to the tuner. Pick a tuner and get a custom dyno. Its the right thing to do. I would get the injectors upgraded and run some NGK spark plugs too. Consider that if you want a CAI later, than you're going to have the elbow drilled twice. Just pace yourself and you won't do things twice.

 

Why would anyone want to put Nitrious in a Crossfire and ruin such a beautiful machine. I guess that is the problem when the price of these cars dropped. Kids can now buy them cheap and rig them with all kinds of BS and turn them into Ricers.

 

blackcrossfire, I understand where you are comming from, and believe me I was just against nitrious as you are. But I have done tones of research and over and over again it comes to the same conclusion, if you use the stuff properly you have nothing to worry about. We have two members one with a limited and one with a SRT that have used it for years now and have reported no problems!!! what more cost effective mod will you get to boost you 75hp? and its not a ricer thing!! I've seen fully blown V8's, M3's and even M6's using nitrious, I think were past the stage of calling it a ricer thing.

 

hay,, I had NOS wet on a ptcruiser (the one below) I started with a 35 shot,, no tuen needed,, then went to the 50 shot no tune needed ,,, then went with the 75 shot each time my air fuel was going down (richer with the 75 shot my afr was in the low 11's high 10's I had started in the high 12's (retuned the car got the afr back to the low to mid 12's the car was running low 13 seconds in the 1/4 mile I went with a 100 shot fine tuned the jets,, ( the instructions that said what jets needed to get 100 hp was wrong) i had like 89 hp so i am guessing that they make them all low after fine tunning the jets to a real 100 hp, my PT ran 12 93 @ 108,,,, eight (8) ( auto)transmissions later,, I removed the NOS and could here every click ,knock,squeak, moan that that car never had before,, I sold it with a total of 30000 miles on the car,,, all track miles ,,,,,when i bought my crossfire,, I sold the NOS system and will never use one again,,, yes they make the car go like hell but not for me. if you could stay with a 35 to 75 shot,, and never go above that it might work well for you (((but you can't))) the more you have the more you want. good luck jim

 

I am an ex-drag racer and have been around nitrous since the late 70's. Just prior to getting involved in the Crossfire I was very active in the Mini Cooper community and quite few cars ran Nitrous dry systems, meaning only nitrous was being injected and the stock computer and fuel injectors were capable of correcting the Air fuel ratio. Here a link to a sytem that some of the Mini Cooper S guys used with no reported problems. With patience, and careful attention to detail, you could do this yourself.

http://www.zex.com/Pages/124/Dry%204...0Cylinder.aspx

 

I have a fair amount of experience with nitrous oxide setups, while I am just learning the Crossfire's capabilities and limits , but most nitrous systems don't really need tuning for the occasional use since the juice is not a constant on setup like boost, in this case I would just get a good dry system and jet for 50-75 shot. You should use all of the saftey switches like TP/WOT and RPM and running a bit rich is better than lean.

The overall issue with tuning is if you tune for the nitrous, then the car is not tuned for when the nitrous is not in use, but I am not a tuner, even when I had my LS1 platforms another member of the crew did the tuning AND I am not yet familiar with the Crossfire's so I may be off base here.

While I haven't yet talked to TVT Design, my plans are to build a high compression 3.8L engine and install a nitrous system.

To the member who talked about creaks and pops, sub-frame connectors would cure a lot of that, though I don't know if anyone makes them for the XFire.

And to the member who spoke of Ricer's, I respectfully submit that being a Ricer is like being a Poser, Ricers put V8 badges on a V6 (or whatever is the equivalent on Japanese imports) a fart can exhaust, a big silly, useless spoiler and then drive like morons.

 

There aren't a whole lot of chassis out there that are stiffer than the Crossfire. I have alway thoght that was because the SLK chassis which it is based on was a convertible. Whe you add a stiff roof to a MB convertible chassis you get a really stiff chassis!

 

Join Date : Feb 2009...

When did you get your Crossfire again??

 

If you go with our larger injectors, an additional tune for nitrous on a wet system will not be necessary.

I would opt for colder plugs though.

 

Bought brand new in Aug 2005.... so I am just at my 4 year mark of owning this car. Been driving it every day for almost 4 years and have 53K miles on it.

No offense... if I wanted to get an extra 75 horses out of a car I would have bought a mustang GT, 350Z or SRT.

 

my 600cc motorcycle takes a 37 shot without ANY ISSUES for the past year. tuned and mapped to handle it. ( i have a valet map when i loan the bike, nos map . and personal map, )

YOU WILL BLOW YOUR **** UP WITHOUT THE CORRECT FUEL AIR RATIO
END OF STORY

WET system does not hit the sensor in your intake to indicate cold temp thus unless you have a high fuel air ratio to start from factory (we do) then you will go boom.

if you are attempting a cheap( by cheap i mean less expensive) system with no way to monitor your fuel air and no auto shut down switch at least before you hit the button get on a dyno and have your fuel air monitored if high hit the button , adjust jetting until you are withen a safe limit and enjoy.

NOS is fun and safe when everything is inside of the limits , if you cross the line things will blow.
sol sticks. o-ring fails - **** happens

 

Paul's Crossfire & More - Paul's Crossfire & More

looks like a good place to take a look. even if i prove myself wrong.

btw where in the hell do you get a pully for a limited ?

 

Hey guys thanks for all your input, but one thing that has me abit confused is you guys are saying the dry system is safer? I was under the impression & (hence why I'm paying more money for the wet system) that its safer for the engine because it mixes the nitrious with fuel rather then injecting raw nitrious in the engine.

Anthony which plugs do you recommend -6 or -7 NGK's?

lowwkey you can get a crank pully at AMS or Vivid sell the alternative evo pully kit (no crank pully "they dont believe in it)

blackcrossfire I had a SRT, smashed it, got money, bought my car, spent the excess and cant afford another SRT. BUT I think nitrious would be very fun, something different. I have NO PLANS what so ever to exceed a 75hp shot so I think it should be good.

 

Not very polite stereotype...Strangely many of the people here bought their cars to "hot rod" around in, not just to serve as an image enhancer.

Happily purchasing my SRT brand new and paying 37K in 05, (as an old adult), my intent has been to thrash it and put "BS" on it to make it more fun to thrash. Prancing around in a pretty, pseudo sports car hoping to be seen doesn't entertain me...but I don't hold it against the crowd that enjoys this lifestyle.

Unfortunetly the NA cars really need some HP to support the sports car image that is so coveted and rubbed by a lint free cloth by some...Can't we all just be happy? Now where is my hammer and can of gray primer...

But back to the hijaked posting...

Suggest springing for the tune, and add a data logger to make sure you don't fry the pistons. It's either pay a little now, or a lot later. Several people here have N2O NA's and will be able to point you in the right direction..

 

My thoughts exactly Scott, maybe I should go for a 50hp shot with a dry kit and not worry about playing around with the fuel system? Not to mention how much cheaper it is!

 

WELL SAID!

I personally love these cars but think they were hurt by being priced way too high to be called a Chrysler and if you have to pay this much for a Chrysler then it better really perform. Performace wise they really didn't do anything outstanding. I love the build quality and looks and have set out to rebuild my car the way I think it should have come from the factory. I personally believe the SRT will be a very valuable classic in the future and that is why I didn't buy one (yet). If I had I bought an SRT I would have felt compelled to keep it all original. Since I wanted to really thrash one of these cars I picked 2004. Now who wants to come help me yank that anemic V6 out of my engine bay?

 

Sorry Hijak again...

If you really want to convert it to a V8 and don't care about the brand of engine that goes in...Put an aluminum LSx engine from Chevrolet...the tuning is easy and cheap and unlimited supply of speed parts...500+ HP with heads and a cam...