Why would a 75-shot add ~100 WHP??

Slammed6 · Post by **Slammed6** » February 15th, 2006, 3:52 pm

I am just curious i went and dyno'd my MX-3 and made ~162 WHP, Then i have a 75-shot ZEX, and i dyno'd it with that and i only got about 1500 RPMs with nitrous cause i guess the guy dynoing the car kinda let his foot up when the first initial kick hit and the nitrous wasn't spraying after that..LOL

But just in that same RPM with the maps overlayed i gained ~100 WHP, and the car wasn't even in its powerband. Afetr looking at the Dyno they were saying the car would have got up to 270 WHP, which would have been ~110 WHP over the all natural Dyno. But in the section that it did measure i got ~263 WHP.

Does anyone have an explanation y it did that??

Post by **Custommx3** » February 15th, 2006, 6:15 pm

75 shot kit, or you did you set it @ 75?

Slammed6 · Post by **Slammed6** » February 15th, 2006, 7:07 pm

I'm not sure i follow the question?

The 75-shot is what ZEX rated a 75 Shot for their wet kit.

Post by **Custommx3** » February 15th, 2006, 7:55 pm

Meaning.. was it a set 75 no gauge, or thought maybe a 100 Shot dropped to 75 lbs.

Just curious if it was maybe a faulty gauge?

Slammed6 · Post by **Slammed6** » February 16th, 2006, 3:55 am

Meaning.. was it a set 75 no gauge, or thought maybe a 100 Shot dropped to 75 lbs.

Just curious if it was maybe a faulty gauge?

I'm still lost here. What gauge are you talking about?

Mnemonic · Post by **Mnemonic** » February 18th, 2006, 3:02 pm

Slammed6 wrote: the guy dynoing the car kinda let his foot up when the first initial kick hit and the nitrous wasn't spraying after that..LOL

You let someone else dyno your car?

Slammed6 · Post by **Slammed6** » February 20th, 2006, 11:07 pm

Well over here you "personally" can't dyno ur car. The owner of the shop gets in your car to do the actual dyno pull.

ryanlindenberg · Post by **ryanlindenberg** » February 21st, 2006, 10:14 pm

every place i've gone to they don't let you dyno your own car...liability issues or something.

max kl · Post by **max kl** » February 21st, 2006, 11:58 pm

im confused are you saying the shop did 2 runs with nos or one aborted run?

and any nos kit is a general rating i have seen mags test kits and get more and less power than rated.
also if its a zex dry kit and you install it with zex's recomended nozel place ment 3' away from tb i think you will give the nos a longer time to cool the intake charge and make more power. at least according to zex

and a dyno looks at the time it takes to accelerate a known load so if u just tested the nos fore a sec. or 2 than it cant be an accurate reading

Slammed6 · Post by **Slammed6** » February 22nd, 2006, 2:14 am

im confused are you saying the shop did 2 runs with nos or one aborted run?

2 runs all motor, and one with about 1500 RPM's with nitrous..lol

and any nos kit is a general rating i have seen mags test kits and get more and less power than rated.

Well i know they are estimates, no body can gaurentee a certain HP with nitrous. But saying 75 Crank HP and me getting approximately 125 Crank HP is a lil far from an estimate.

also if its a zex dry kit and you install it with zex's recomended nozel place ment 3' away from tb i think you will give the nos a longer time to cool the intake charge and make more power. at least according to zex

Actually i have a WET kit, and the nozzle is like 3" if that from the TB plate.

and a dyno looks at the time it takes to accelerate a known load so if u just tested the nos fore a sec. or 2 than it cant be an accurate reading

Well i am suppose to go back and dyno again, cause now i have the fuel issue fixed and the car pulls soo much harder. I wanna see the new #'s.

projectmx · Post by **projectmx** » March 22nd, 2007, 9:18 am

what was the new hp pull on this? i have a dry 75 shot i'm about about to add to my egt and i'm curious what you got ... plus some guy on feoa.net claims that on 4 bangers when you adda 75 shot kit you really only get about 20-30 hp out of it

Post by **Custommx3** » March 22nd, 2007, 9:33 am

You realize this is like.. over a year old.

projectmx · Post by **projectmx** » March 22nd, 2007, 9:41 am

does the fact that this is over a year old mean he no longer exists or never got another dyno?

Slammed6 · Post by **Slammed6** » March 22nd, 2007, 3:35 pm

projectmx wrote:what was the new hp pull on this? i have a dry 75 shot i'm about about to add to my egt and i'm curious what you got ... plus some guy on feoa.net claims that on 4 bangers when you adda 75 shot kit you really only get about 20-30 hp out of it

Damn this post is old. Well come to find out there was this little piece of plastic stuck on my fuel jet and that made it inject fuel slightly less. So it netted more HP due to the normal A/F ratio of 10.0 that i ran. Under this nitrous pull it was down to about high 12/Low 13 A/F.

I went back and re-dyno'd it on a diff motor with a 100 shot and got a nice 12.5 A/F and it netted me 100 WHP...So i was happy.

From what i read and seen a 50 shot adds about 40WHP and a 75 was about 65WHP...but every company has different jetting combos so they will be slightly different.

projectmx · Post by **projectmx** » March 22nd, 2007, 3:43 pm

see it wasn't pointless to dig up the thread

thanks for the info... still deciding weather or not to hook up this free dry kit i ended up with

MX-3.com

Why would a 75-shot add ~100 WHP??

Why would a 75-shot add ~100 WHP??

Re: Why would a 75-shot add ~100 WHP??