Zex Nitrous Dyno
12-04-2007, 06:17 PM
#1
Destroying Threads
Thread Starter
Zex Nitrous Dyno
Hey guys, I figured I might as well make a new thread about it so that you dont have to read 10 pages to see a dyno:
The mods are listed on my signature
1. this dyno is the closest I can do to simulating REAL ROAD driving power, not dyno power. which means
A. did not pull DSC/TSC fuse
B. did not pull ABS fuse
C. normal temperature
2. The car at the time of dyno, is running at full potential, it has new spark plugs, new coils (well, 200miles), the engine oil is 50 miles old, new tranny oil, 4oz premix
3. The nitrous system is running at 975PSI, fuel system is running at 60PSI which I take it is optimum for both the nitrous system and the fuel system
4. This is on a 65 shot Zex Wet Nitrous kit with no issues, everything is out of box (sorta, I take it my mods don't do jack)+ bottle heater and nitrous pressure gauge
here are the results:
My car NA base dyno, 3rd gear
My car with Nitrous system engaged at 4k RPM, 3rd gear
Nitrous to NA comparison, 3rd gear
PS: for those of you who has seen my old dyno, the 3whp is from changing the HKS shitty *** filter to a Spectre cone filter/premix
the original thread can be found here:
https://www.rx8club.com/series-i-major-horsepower-upgrades-93/nitrous-dyno-131790/
thankyou and hope you enjoy it as much as I do
The mods are listed on my signature
1. this dyno is the closest I can do to simulating REAL ROAD driving power, not dyno power. which means
A. did not pull DSC/TSC fuse
B. did not pull ABS fuse
C. normal temperature
2. The car at the time of dyno, is running at full potential, it has new spark plugs, new coils (well, 200miles), the engine oil is 50 miles old, new tranny oil, 4oz premix
3. The nitrous system is running at 975PSI, fuel system is running at 60PSI which I take it is optimum for both the nitrous system and the fuel system
4. This is on a 65 shot Zex Wet Nitrous kit with no issues, everything is out of box (sorta, I take it my mods don't do jack)+ bottle heater and nitrous pressure gauge
here are the results:
My car NA base dyno, 3rd gear
My car with Nitrous system engaged at 4k RPM, 3rd gear
Nitrous to NA comparison, 3rd gear
PS: for those of you who has seen my old dyno, the 3whp is from changing the HKS shitty *** filter to a Spectre cone filter/premix
the original thread can be found here:
https://www.rx8club.com/series-i-major-horsepower-upgrades-93/nitrous-dyno-131790/
thankyou and hope you enjoy it as much as I do
12-04-2007, 06:29 PM
#2
Registered
iTrader: (4)
Join Date: Jul 2007
Location: Des Moines, Ia
Posts: 950
Likes: 0
Received 0 Likes
on
0 Posts
Thats not bad at all ... as i said in the other thread i would like to hit 200 N/A and then the nitrous... if you think about it, with engine management you would most likely break the 200 mark N/A and that would put you at atleast 240 on the nitrous which is not bad at all. Thanks for bein out guinnea pig Taj
12-04-2007, 06:32 PM
#3
Destroying Threads
Thread Starter
I'm always teh guinea pig lol, but yea, hopefully Charles will come chime in on the A/F ratio, which was the primary reason for me to dyno this time
as you can see from the graph, we can't rly sue zex for false advertising as it does add about 54whp at one point or another, but it depreciates after 6k rpm to a final add of about 37whp...which is not bad seeing as it costs 500$+120$ for bottle heater, 300$ more for install......
as you can see from the graph, we can't rly sue zex for false advertising as it does add about 54whp at one point or another, but it depreciates after 6k rpm to a final add of about 37whp...which is not bad seeing as it costs 500$+120$ for bottle heater, 300$ more for install......
12-04-2007, 06:40 PM
#6
Destroying Threads
Thread Starter
the torque right there is the *** kick I was talking about in the other thread, u can definitly notice it, which was not that noticeable in the last dyno run
230whp for 900$? (700 if self installed) thats not bad at all, what u guys are forgeting is the cost per whp.....
230whp for 900$? (700 if self installed) thats not bad at all, what u guys are forgeting is the cost per whp.....
12-04-2007, 06:41 PM
#7
No means yes
iTrader: (1)
Join Date: Nov 2006
Location: Jersey City NJ
Posts: 1,507
Likes: 0
Received 0 Likes
on
0 Posts
Taj it has to wind down the higher you go since you're spinning the engine faster but nitrous delivery is constant. The faster you spin the engine, the less nitrous you are adding per combustion event, so the net added torque will actually decrease with rising RPM. However, since HP = torque x RPM the HP increase will be constant, as you can see from the graph.
12-04-2007, 06:45 PM
#8
No means yes
iTrader: (1)
Join Date: Nov 2006
Location: Jersey City NJ
Posts: 1,507
Likes: 0
Received 0 Likes
on
0 Posts
The AFRs are on the rich side, but on the other hand it's good to have a margin of safety. Without tuning you won't know if you're dipping south of RBT or not. If you are, then there's some more power to be freed without sacrificing safety.
As for the cost, nitrous = 40HP for $1000. Greddy turbo = 80HP for $3000+. There is little doubt that the initial outlay is much less for nitrous, you just have to figure in the extra cost over the life of the system for refilling the tank. If you plan to be a heavy user, the turbo becomes more attractive after 6 months to a year.
As for the cost, nitrous = 40HP for $1000. Greddy turbo = 80HP for $3000+. There is little doubt that the initial outlay is much less for nitrous, you just have to figure in the extra cost over the life of the system for refilling the tank. If you plan to be a heavy user, the turbo becomes more attractive after 6 months to a year.
12-04-2007, 06:45 PM
#9
Destroying Threads
Thread Starter
^ near constant u mean 
yes, it is almost constant, but it went down from adding 58whp when engaged at 4k rpm down to +37 at 8k rpm, however, that is not a bad thing, it actually helps ALOT in acceleration, which is what Nitrous systems are designed to do, crazy *** acceleration
and this result without tuning is very good (again, price per whp) and I am looking forward to seeing it the results once I tune NA AND with nitrous
I am also now very eager to see what how the system will perform in conjunction with a turbo kit
yes, it is almost constant, but it went down from adding 58whp when engaged at 4k rpm down to +37 at 8k rpm, however, that is not a bad thing, it actually helps ALOT in acceleration, which is what Nitrous systems are designed to do, crazy *** acceleration
and this result without tuning is very good (again, price per whp) and I am looking forward to seeing it the results once I tune NA AND with nitrous
I am also now very eager to see what how the system will perform in conjunction with a turbo kit
12-04-2007, 06:50 PM
#12
Destroying Threads
Thread Starter
CS, u don't need 1k for a nitrous system, to get the same result as me, u only need as little as 650 (zex 82021 kit + bottle warmer), that is self installed
however, if u do want to let a professional install it, both the greddy Turbo kit AND the Zex will cost more............
it is generally about 300$ to install a nitrous kit so lets say 1000$ for 40whp installed.......the greddy turbo, installed, will run u about 3.5-3.8k for 80whp........
a bottle lasts me 2-3 weeks depending on the amount of ******** on the road.
I pay 35$ per each fill up
however, if u do want to let a professional install it, both the greddy Turbo kit AND the Zex will cost more............
it is generally about 300$ to install a nitrous kit so lets say 1000$ for 40whp installed.......the greddy turbo, installed, will run u about 3.5-3.8k for 80whp........
a bottle lasts me 2-3 weeks depending on the amount of ******** on the road.
I pay 35$ per each fill up
12-04-2007, 06:57 PM
#13
'03 Dodge Viper
12-04-2007, 07:01 PM
#16
Registered
iTrader: (4)
Join Date: Jul 2007
Location: Des Moines, Ia
Posts: 950
Likes: 0
Received 0 Likes
on
0 Posts
earlier in the year i ran a 14.2 with no power adder at all... 13.7 seems kinda low for havin a turbo .. but then again there are many factors when it comes to the strip which i am sure everyone knows... not trying to hyjack the thread by the way ..
12-04-2007, 07:01 PM
#17
No means yes
iTrader: (1)
Join Date: Nov 2006
Location: Jersey City NJ
Posts: 1,507
Likes: 0
Received 0 Likes
on
0 Posts
Yes you can get it done for less than $1k but I would want alot of extras to make the setup feel complete. Remote opener, bottle warmer, purge, gauges... At least I would install it myself so that would absorb some of the cost of the extra gear
12-04-2007, 07:09 PM
#21
Registered
iTrader: (4)
Join Date: Jul 2007
Location: Des Moines, Ia
Posts: 950
Likes: 0
Received 0 Likes
on
0 Posts
yeah i agree ... it would be crazy if i actually hit it .. but it should be something just out of reach for me to strive for ... i doubt i will acutally hit it with that set up but who knows whats to come in the future
12-04-2007, 07:11 PM
#23
Destroying Threads
Thread Starter
Phish, if you are infact trying to touch 12s, your car NA tuned must run at least 210whp
and as chickenwaffles said, you will need to spray more than 75 shot
I would say you will need at least 150shot, probably a stage 2 nitrous system, and definitly not zex and it must be tuned!
and as chickenwaffles said, you will need to spray more than 75 shot
I would say you will need at least 150shot, probably a stage 2 nitrous system, and definitly not zex and it must be tuned!
12-04-2007, 07:12 PM
#24
Destroying Threads
Thread Starter
12-04-2007, 07:13 PM
#25
'03 Dodge Viper