I just saw Fast and The Furious for the 3rd time yesterday, and was wondering how they made the fire come out of the back of the cars?? If anybody has any idea, let me know...

 

I have heard crazy stuff before like throwing spark plugs up the tail pipe will do that. But I don't know if it is true....

 

Havn't seen the movie, but an old hot rodder trick and bikers use it to, is to plumb a seperate gas line to the exhaust tips. Drill a hole in the exhaust, insert a 90 degree fitting from the gas line to the pipe. Have an electric inline pump installed in this gas line and with the flip of a switch, you pump raw fuel in the hot exhaust and it ignites, viola fire out the back end.

 

A while ago a link to a kit to get the flame was posted. It's kinda like the fake blow off valve. Apparently they are popular in Japan?

 

This can happen with no extra stuff on turbo cars. It's really a tuning issue. Lots of really high boost cars run really really rich to prevent detonation. When you floor the throttle and then let off, not all of this gas gets burned in the cylinder...thus some unburned fuel makes it into the exhaust system. As soon as it hits the hot exhuast manifold...FIRE!!...right out the tail pipe sometimes.

 

isn't it the NOS that gets out of the exhust like half unburned and then it makes fire at the mufluer

 

i dunno thats what i heard...

 

I am pretty sure that's what it is, but i think in the movie they had too much fire coming out of it...

 

It's special effects, people. Like when the Charger got up on two wheels:
There were two smaller hydraulic wheels under the car to lift it at an angle.
AND there were fake smoke jets behind the tires.
AND that entire scene was filmed at less than 20 mph.

 

NOS doesnt burn. Plus, who hits the NOS when they are revving at the starting line?

 

That's right, it produces more oxygen. Only the pressurized tank is explosive.

 

They opened the valves of the bottles before the race, a little bit of NOS gets into the system, and i think that makes the fire out the back..but i am not sure, maybe it doesn't

 

Dont take this the wrong way , but, you obviously dont know how an NOS system works. The idea is that NOS and fuel are fed to the engine in very exact amounts at specific times. There are several complex check sytems that mkae sure it only happens when it's supposed to. If a little leaked into the engine when it wasnt supposed to, it could cause major problems.

Go to www.nosnitrous.com to get all the poop.

 

Thankx for all the reply's, I'm not thinking of putting one the those on my Max, if anyone was thinking of that.. Just wanted to know. A friend of mine has a Mustang and I think it would look nice on that. Anyway, does anyone with a Auto know how to get rid of the speed limiter, I hit 135 and the engine stopped pulling.... I was heated...

 

That's not a limiter. Any limiter you would have would kick in at around 115. If it's 135 that's just top speed.

 

Ok so the more mods I add the higher the top speed is, that makes sense, I was wondering b/c a I was racing a friend of mine in a 98 mazda 626, he has a stick and he past me... That will never happen again....

 

Just so you know...

Aerodynamic drag increases exponentially with the square of your speed. This means that when your speed doubles...your drag quadruples.

In other words, you need a lot of HP to make any meaningfull difference in top speed.

 

That is the limiter, limiter don't kick around 115 only if its like GXE where the tires are limited to like 120. but on the bouchore of Nissan on the maxima it says 143.

 

Wait a minute. I have a GXE, and i noticed the H rated tires, but you mean I actually have a speed limiter? I hope not, i had a lousy 108 limiter in my last car and it really took away from the car. Especially cuz I was gonna get newer faster tires and see what this baby can do. I'm gonna go cry now.

 

I just talked to my local Nissan Dealer and he said that there is a speed limiter on the Maxima's, which really sucks.. If you look in the Nissan brochure I think it says that the SE's top speed is 143 and is electronically limited... So my question again is does anybody know how to get rid of it?????

 

Yep, i heard from people who drive the GXE that the limter is around 115-120mph the SE ones are a lot more like 130+ some even got with a 5sp SE to 145-148.

 

Argh. So i'm stuck at 115. And I'm sure that the only way to remove it is with a new ecu or something similar, which is way too expensive for me. I saw the brochure and the 143 top speed and was very happy, think I could sue nissan for false advertising? or misleading anyway? ah, oh well, at least i'll save the money on faster tires...

 

i heard that if u get faster rated tires taht u can go there and they will remove the reset the limiter... i dunno i think u should go to ur service center and find out...

 

The only way to get rid of the limiter is replacing the ECU chip which controls the goverment limiter. no one sells those chips for a 5th Generation maxima so currently there is nothing we can do about it. also on the bouchore i think they said something down at the bottom that it was tested on an SE one(its like a footnote)

 

Mine maxed at 135 so i guess thats good but it could be better, I am thinking about gettin new tires, Z rated, so hopefully that should help.... As soon as I bald the front ones enough....

 

incorrect

if you install and apexi super afc it gets rid of your limiter

if any of us has an acura or honda w/ vtec, an apexi vtec controller also gets rid of the limter on those

getting new tires will not do anything because your computer chip has information programmed into it from stock...you can always get the superafc but new tires won't change the limiter...the computer isn't that smart

and a lot of ratings on stock tires are very conservative...if they say you can take them upto 120mph you can easily take them over that, they are just very careful and that is why they put the limiter on there (less lawsuits)

 

the fire from the exhaust is the actual flame from engine combustion.....rich fuel mixture plus lots of pressure from rebuild engines running HIGH pressure can usually manage this....the sparkplug in the engine ignites the fire...the flame from it actually goes past teh manifold and out the exhaust...

 

NO2 doesn't burn, per se. When NO2 molecules are heated to 750+ degrees, the nitrogen and oxygen separate. This freed up oxygen is what helps combustion in the cylinder. The nitrogen also helps, acting as a buffer to help prevent detonation... Flames out the tailpipe result from unburned fuel... or propane!

 

I have a GXE auto and I'd say the governor kicks in at about 133 or so. I know for a fact that it's not 115 or 120, cause I've had mine past 125 on 3 occasions. I actually have a picture of it at about 128, and I'll see if I can find a scanner somehwere. When I hit the limited speed or RPM's (don't know which it is-I tend to pay a lot of attention to the road at that speed), the engine cut out on me, and it actually kicked the OD off (you can see that too in the pic). Maybe mine's different, but I don't see why it sould be...

 

wrong.

it's an apexi rev/speed meter that gets rid of your limiter.

 

well talking to a number of people has told me differently...yj has the super afc and he has taken his se auto upto 152...2k autos are governed around 133mph or so...i know other people that have the superafc and it has apparently gotten rid of the governor...same with the apexi vtec controller

don't know if its true since i don't have one (yet) but i was just relaying info that i had heard

 

the only Maxima that is governed is the GXE... the SE has no governer... it is drag limited... I had mine up to 138 and i just ran out of room... otherwise i wouldve kept going up...

 

i guess it just depends on the car...i've heard of people w/ automatic se's being governed around 133 (including me) even though the rpms are quite a bit below redline...i know yj has gotten his upto 152 w/ the superafc w/ his nitrous (auto)

i know plenty of people w/ sticks that can take it upto the lower 150s

 

i've installed and used both the super afc and the rev/speed meter before. when installing the afc, you tap into the RPM signal lead, the MAF sensor signal line, power, and two grounds. when installing the rev/speed meter, you tap the power, ground, RPM, and SPEED SENSOR leads.

there's no way a super afc can remove the speed limiter - it only alters the MAF signal to adjust air/fuel ratios. i've used both first hand. i currently use the apexi rev/speed meter, and that gives you the option to remove the speed limiter.

 

Ok, so can somebody tell me definitively what the speed limiter is set for on a 2001 GXE automatic? If it's around 130 I'm not worried, thats fast enough for me, but if its like 110 or even 120 then it's gonna have to go.

 

mine is an auto too