Thread: Clutchmasters FX500 install; UPDATE w/ videos on starting problem

DING DING!! Winner. Same shit on my side. When I had the ACT setup (JGY/ACT PP and ACT disc) it chattered and chirped like a bloody cricket orgy. The pedal effort sucked. I got used to it, but you should of seen when I let a few (and only few very trusted car people like my bro who runs his 300whp+ MR2 etc.) to try drive it. He was like "WTF is up with this pedal this is ridiculous." I didn't notice it anymore. everyone stalled it too on their first, second, sometimes 4th tries to get it going from a stop though (that's partially due to the Fidanza flywheel and lightweight pulleys im sure)

Throwing nitrous at a car will not ruin the motor. It's all on the quality of the install. Same goes with any set up be it boost or juice.

My friend with a Skyline who's seen and done it all said "I will beat your ass if you even mention nitrous to me again for this motorr" haha


Like I said its prob just my personal experiences of people I've known.

I ran 100-125 shot of nitrous through my 10:1 DE for several years and the car never skipped a beat and this was with going through 2 bottles a week. It was also my DD for a majority of that time. I later sold the nitrous set up and turbocharged that same motor.

Again it's all on the install and how the motor is tuned.

WOW! That is awesome. NOS and Boost on the same motor. I have questions now if you don't mind:

1) First which made more power, the motor at it's peak boost, or when you had the full 125shot going?

2) Which would have/did run a better 1/4 mile time?

3) Did you have trouble finding fill up locations for your bottle?

4) What octane fuel did you run for either? Same? Change?

5) What was an approx. cost for the nitrous setup? Turbo setup? (Ballpark ranges)

6) If you could do it again, would you have just gone with one or the other and skipped one?

Well I am on break at work so I will answer all your questions LOL

1. The car made roughly 100 whp more on boost than on nitrous. Funny thing is the TQ was about the same 300tq Nitrous car usually make more TQ than WHP
2. I will say the nitrous car may have had the upper hand but, the turbo car had a lot more MPH
3. Most shops in our area filled bottles
4. 93 octane on the nitrous car and C16 on the turbo car when at high boost
5. My nitrous set up (kit and ECU) was right around $1200 and the boost set up (the one at the time) $2500
6. At the time I prefered and liked the nitrous car more. It was very underestimated and hurt a lot of feelings. (Lots of grudge racing at the time)

In the position I am in now with different goals in mind I went boost this time around.

Thanks for your replies. I haven't run across someone who has juiced AND boosted the same motor. That's like a case study right there. I'm sure others would have questions for you as well. One other question if you don't mind, for your nitrous setup, did you go with JWT and I'm assuming a wet setup?

Oh and I lied. Where do you get C16?

I ran a JWT 100 shot computer. It was a dry set up. The extra fuel was compensated with bigger injectors. In my case 370cc in jectors.

As for C16 most peformance shops carry it if not they know where to get it.

I have an ACT HD pressure plate on my now stock P11 and even with the hydo pedal that bitch sucks. This may be shapping my idea of the fx500. You all seem to atest to them so they might not be that aggresive as I though.

@Kyle if he's not going boost than he just isnt. He could run a twin disk for all I care.

Lol I miss spoke turns out I'm running the full metal paddle disk with heavier PP that's why I'm getting chatter. Nothing wrong with running a high hp clutch on a lower hp motor, we dont have crank walk issues like other brands. I have been running a 600hp clutch on a 200hp motor and it's great.