My experiment with additional snorkel

[TRD_07]

Maybe a vitamin water bottle will yield better results?!

[Fast_Freddy]

Originally Posted by makinen

I see your point.

Surely full load output should be important to this kind of mod. The stock setup is just two rivet holes away, so I can easily restore to the stock state and have dyno sessions to make evidence for improvement. But you know that it takes some time and money. I could make some data log using Torque app rather than doing dyno tests.

Anyway, 3rd gear 80-120kph compared to the stock 86 was almost same. So at least rpm band used that test wasn't badly affected, maybe.

But the torque decrease in bottom-end could be felt easily when you just release a clutch pedal to launch a car. Another problem is that dyno tests cannot show part load outputs. Real life drivability is relied on the partial throttle region as I think.

I like Torque a lot but it's very inaccurate and unsuitable for such measurement, IMO. A dyno session isn't really warranted either since, as you pointed out, it doesn't measure part-throttle and it is also difficult to accurately measure minute differences on the order expected here.

When you were testing, did you reset the ECU between mods and then drive a sufficient distance to allow the ECU to adapt to the mod? I submit that the perceived loss of low end tq might well have been a slight change in measured load caused by a change in MAS signal slope. Perhaps the intake mod caused a lean spot?

I suppose my point here is that I believe it to be almost impossible to accurately measure and quantify the effects of such minor changes solely by "feel". A flow bench would be ideal. Still, it is fun to experiment and if it feels better to you, than why not? Good luck with it.

[wrussi]

dude that gatorade bottle is gonna melt. i hope you only had it in there for testing purposes

[Kodename47]

I never did get around to doing it - I figured there was nothing to be gained. @Fast Freddie if you look at my post linked above, you'll see that it definitely leaned out at the bottom end.

[zooki]

Originally Posted by campy

What could be happening is that air is going in through the stock snorkel and out through your added snorkel. The air wants to go where there is the least resistance, so it might be easier to go down the piping than through the filter and into the throttle body.

I just feel like there's a reason why no one has done this before.

The path of least resistance would be into the cylinder that's pulling a vacuum. The reason it hasn't been done is because the stock snorkel is perfectly adequate for the motor's level of horsepower, if not a little bit more. But people are convinced that the resonators somehow "choke" the motor...sometimes engineering solutions aren't "pretty", but they do the job.

[PoWn3d_0704]

I think it is awesome to do something like that. For instance, I'm pretty damn sure I lost power by removing that Sound Generator w/ the Perrin Intake. Had CELs, reset ECU, and the power isn't quite the same. Used to be able to hit 61MPH in 2nd before the limiter, and now I hit 60 as the limiter kicks in. Been quite a few miles since ECU reset, I'm just hoping it comes back.

[stevo_12v]

I usually try not to criticise people, but those mods are hell ghetto and probably decrease performance by adding too much turbulence. Your better off using the Gatorade lid to block off the sound generator, and taping up the side of the airbox so there's less turbulence.

Also, a good engine clean wouldn't go astray

I give you a 7/10 for effort though.

[Fender0122]

Hey sometimes youve gotta use what you gotta use. I used a gatorade cap to temporarily block mine off so there's no need to knock the guy for wrenching around. If it works then try to make it look pretty later

Its all about the volume of that bottle, and the location/distance from the throttle body. The volume is meant to dampen shockwaves from the valves opening and closing. Doing so aligns the waves to be more in sync with the rpm's at a certain range. Changing the volume of that tank basically changes what rpm the torque hits

Its basically the same theory behind the design of the intake manifold plenum and runners. You have a ton of different variations in runner length and plenum size depending on the build of the engine, way its driven, etc.

[Astroboy]

Please dyno this

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[Captain Snooze]

Originally Posted by Astroboy

Please dyno this

Please tell me you necroed this just for fun.

[Gunman]

Is that hose pulling warm/hot engine bay air into the air box?

[Astroboy]

Originally Posted by Captain Snooze

Please tell me you necroed this just for fun.

I just wanted to see if it gave actual results

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[Astroboy]

Originally Posted by Fender0122

Hey sometimes youve gotta use what you gotta use. I used a gatorade cap to temporarily block mine off so there's no need to knock the guy for wrenching around. If it works then try to make it look pretty later

Its all about the volume of that bottle, and the location/distance from the throttle body. The volume is meant to dampen shockwaves from the valves opening and closing. Doing so aligns the waves to be more in sync with the rpm's at a certain range. Changing the volume of that tank basically changes what rpm the torque hits

Its basically the same theory behind the design of the intake manifold plenum and runners. You have a ton of different variations in runner length and plenum size depending on the build of the engine, way its driven, etc.

They have these plugs that expand you can get at AutoZone. There is a whole thread about it somewhere. It'll make it look cleaner. But I'm down with the "you gotta do what you gotta do" life lol

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[wparsons]

Originally Posted by PoWn3d_0704

I think it is awesome to do something like that. For instance, I'm pretty damn sure I lost power by removing that Sound Generator w/ the Perrin Intake. Had CELs, reset ECU, and the power isn't quite the same. Used to be able to hit 61MPH in 2nd before the limiter, and now I hit 60 as the limiter kicks in. Been quite a few miles since ECU reset, I'm just hoping it comes back.

Ummmm... power doesn't determine what speed you hit in a given gear at a given rpm. That's the gear ratio and nothing else.