nos?
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?
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?
Lead Lap
Joined: Jul 2006
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From: TX
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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.
It does seem to lose steam at 6000 rpm though. I just thought it was a cold bottle.
Last edited by HKS350; Dec 6, 2007 at 06:24 PM.
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
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.
Thread Starter
Lexus Test Driver
Joined: Sep 2007
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From: Dallas
^^ 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?
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.
