Lextasy89

so it wont we a true dual will it? or are you gonna cut the piping thats the 2 into 1 on the hks and just use the mufflers and tips

Gernby

iTrader: (1)

True dual exhaust isn't beneficial. There needs to be some sort of connection between the 2 pipes to improve scavenging.

Does anyone have a link to a dyno plot showing the difference an N2O system makes? I'm curious what it will look like. I'm picturing a graph in my mind with peak torque gain at the lowest RPM then drops off linearly as RPMs climb. Wouldn't it be sort of opposite from a centrifugal super charger? Basically if you started spraying at 2000 RPMs, torque output would be 400+ ft-lbs, or something?

jimmyjazz

http://www.ls1tech.com/forums/showthread.php?t=825273

Gernby

iTrader: (1)

Jeremy,

I'm curious how your system handles VDIM. Does it automatically quit spraying when VDIM shuts the motor down due to wheel spin?

Gernby

iTrader: (1)

Thanks! So it makes the torque curve less flat, and makes the HP curve more flat. That would REALLY change the thrust curve that I posted above. It might even make the optimum shift points below redline. I bet it feels like a big V8 that has big ***** down low, then looses steam up high.

Gernby

iTrader: (1)

Red is torque and black is HP. The percentage change is MUCH greater down low than it is up high.

jimmyjazz

There are some interesting thread's, faq's etc. in that forum too. They're all V8 LSx but it's still "the nitrOs" *long O*(V8 slang instead of "nos")

Lextasy89

that link wont work for me

jimmyjazz

Try going to ls1tech.com, nitrous,and "Nitrous results on my 07 TBSS" sorry I know very little about computers and the net other than to clic!

HKS350

iTrader: (4)

This is almost how it feels. But when spraying you can really feel the cams change. Its a surge of torque then a shot of HP up top.
It does seem to lose steam at 6000 rpm though. I just thought it was a cold bottle.

HKS350

iTrader: (4)

Well I have the TPS sensor as my trigger, so it pops on-off-on-off etc.. I have to disable VDIM when using NOS. The TPS drops to 62% open every time it sees wheel spin. Thats below trigger voltage for the ZEX. It would be impossible to program the ZEX box of these high and lows. Its just to dumb

HKS350

iTrader: (4)

I'll have true duals. I'm going to bolt to the mufflers. And toss the HKS Y-pipe. I was at a Dyno pull over this past weekend. All V8's. I noticed that the guy's with H-Pipes made more torque and the x-Pipe made more HP . I'm a torque kinda guy. It seemed that the H-pipe had more bottom end. I'm thinking this will help my 60' times.

Lextasy89

^^ arent the hks mufflers fit for 2.25" tubing... I dunno if it matter though, also you say your more of a torque kinda guy.. well wouldnt 2.25" piping be better for torque and 2.5" tubing be better for top end hp?

caymandive

iTrader: (2)

If you research exhaust systems in more depth, it's not necessary about the sizes as much as it's about obtaining maximum exhaust velocity.

Lextasy89

i tried to find more info about this^^ but didnt really get anywhere.. but I had just heard the 2.25" would be better for torque and 2.5
' would be better for hp on our cars