Create backpressure and gain low end torque.

d_m_kolb · Post by **d_m_kolb** » Thu Jul 04, 2002 7:43 am

I just found this product a few weeks ago and have been talking about it on another forum before I said anything about it here. We all pretty much came up with the same thing. (It's a good thing)Most people know, or you at least do now that having back pressure in your exhaust system at low RPMs really helps your engine build low end torque that many small engines lack. This product can give you the added back pressure down low and also the free flowing exhaust during the higher RPMs. As RPMs increase a valve starts to open letting exhaust through without restriction. It's then fully open at 4000 RPM. The reason the valve opens is so the engine doesn't have to work so hard to push the exhaust out, because if it stayed closed it would hurt performance. Once the RPMs drop down again the valve slowly closes. quote:Patented self-adjusting internal control valve responds to RPM load and temperature to equalize pressure and regulate exhaust flow. During high exhaust flow, the internal valve opens to let engine gasses escape freely. At lower RPM, the internal valve closes to regulate exhaust flow and improve engine performance. The result is increased horsepower and torque, improved fuel economy and less harmful emissionsâ€”without having to modify original engine specifications. Verified/CARB #D-22. Test proven to improve gas mileage and reduce emissions! Independent tests by 2 laboratories certified by the Federal EPA show that the TurbolatorÂ® improves fuel economy up to 8.3%, reduces hydrocarbons by 14% and reduces carbon monoxide by 12%. Manufacturers website. http://www.ultrafitexhaust.com/newprod_turbo.htm JC Whitney's website selling it. http://www.jcwhitney.com/product.jhtml? ... 25&BQ=jcw2

Flip-Side · Post by **Flip-Side** » Sat Sep 21, 2002 12:22 pm

Ever heard a car with one of those custom muflers that sound like a mad hornet? Really rough, pops a lot, and crappy tone all together.This especially happens when there is too little back-pressure, and not enough exhaust to flow through the system. Put that same muffler on a v8 and it'll smooth out nicely. Mabey this special tip with your custom muffler will make it sound better.

d_m_kolb · Post by **d_m_kolb** » Sun Sep 22, 2002 5:32 am

I understand what your saying about the poping exhaust. A exhaust should pop ever for any reason. If it does something isn't right. Either the engine isn't tuned the way it should be or something isn't quite right with the exhaust.I'm going to buy one of these within a month. I'll post back here on what I find out.

Flip-Side · Post by **Flip-Side** » Fri Nov 08, 2002 2:21 pm

JCWhitney has em for $80. I will definately get this when I get my flowmaster 60-series. It will let it roar at high rpms, and mellow it out at cruising speeds to reduce the headaches. I've seen em on a Dodge Charger down here, and it was great sounding. Guy said that all he had were glasspacks, and at idle it sounded pretty mellow.

mu_ohio · Post by **mu_ohio** » Sat Nov 09, 2002 6:23 am

This very similar to the exhaust on the Maxima. If you notice it has to outlets and appearently the 2nd opens at higher rpms to allow more flow then closes to help with torque.

shibaman · Post by **shibaman** » Wed Nov 13, 2002 9:30 am

I called this company today and talked with them. It sounds like it will help my low end but not take away the mid and top end that I have now. He told me that they would sell to me direct at a savings over what J. C. Whitney sells them for. I think that I will buy a tip. Hey! 50$ plus 20 shipping from Canada. I think that it is a good buy.

abe98gt · Post by **abe98gt** » Wed Nov 13, 2002 11:11 am

Let us know how it works.

Flip-Side · Post by **Flip-Side** » Wed Nov 13, 2002 7:21 pm

yeah, Please tell us how it turns out.

Vibey · Post by **Vibey** » Fri Nov 15, 2002 12:39 pm

What is the size for the VIBE.Thanks

Cubanpete · Post by **Cubanpete** » Fri Nov 15, 2002 9:39 pm

So have you received this yet?? Does it sound and perform as described? Do you actually get more pep??? or just smoke???

shibaman · Post by **shibaman** » Fri Nov 15, 2002 10:08 pm

I ordered in on Friday direct from the company. The outside diameter of the exhaust pipe is 2" so he is sending one that has an inside diameter of 2". Hopefully next Sat. morning I can get it installed. I have a Magnaflow muffler with a resonater in front on my car.I also have a TRD airfilter. With this setup I have great mid and top end power. With the factory ex. you have great low end but when you go to merge on the freeway above 3500 rpm it starts to run out of steam! I went on a 900 mi. trip and got 30 to 32 mpg going 80 + with an auto trans. It climbs hills much better that my 95 Pathfinder and gets double the milage.

Flip-Side · Post by **Flip-Side** » Sat Nov 16, 2002 2:34 am

quote:I ordered in on Friday direct from the company.Please post back and tell us how it sounds, and affects performance. I really shouldn't put so much faith in this, but the ones I have heard sound great. The manufacturer's site claims lower emissions and better fuel economy as well, so I'd welcome any input on this.

andrewmva · Post by **andrewmva** » Sat Nov 16, 2002 3:25 am

OH haha this is an old old trick, ever heard of supertrapp exhaust?? They have been making exhaust systems like that for years. It will help a small amount, but the gains will be minimal.

NovaResource · Post by **NovaResource** » Sat Nov 16, 2002 5:14 am

Thank you. I tried saying this was bogus before but people swore this showed HP gains on the dyno.

d_m_kolb · Post by **d_m_kolb** » Sat Nov 16, 2002 6:13 am

You can all say what you want. It makes a lot of sense. Everyone complains about the low end torque of their vehicles when they install a free flow exhaust system. This might be what you need to keep the low end torque of the vehicle while not hurting high end HP.Ya supertrapp has done this for years which is prove it works. LOL Who ever does this first please respond back with performance stats.

shibaman · Post by **shibaman** » Sun Dec 01, 2002 2:02 am

See my post -Turbolator, It does'nt work well.

northvibe · Post by **northvibe** » Sat Oct 22, 2005 2:51 pm

holy crap this is old, but did anyone get one and whats up with it.

goodvibe · Post by **goodvibe** » Sat Oct 22, 2005 11:07 pm

It makes sense but aperantly doesn't help us. Somebody on this or the Matrix board tried one about 2 yrs ago with an after market exhaust and didn't like it. I think he even dynoed it.

Digger · Post by **Digger** » Sun Oct 23, 2005 12:33 am

I wonder if it works and if it would fit is a standared exaust

joatmon · Post by **joatmon** » Sun Oct 23, 2005 1:11 am

Quote, originally posted by shibaman Â»See my post -Turbolator, It does'nt work well. shibaman's Turbolator post is http://forums.genvibe.com/zerothread?id=1728

MadBill · Post by **MadBill** » Sun Oct 23, 2005 4:29 am

The story of backpressure helping power at any RPM is totally untrue. Backpressure is no better for your car than dragging the brakes. What is true is that oversize pipes, especially for the header, mean very low exhaust gas velocity at low speed, and this can lead to reversion, where the exhaust flows back into the cylinders and contaminates the fresh charge.Manufacturers sometimes use flaps/movable baffles not to increase backpressure at low speed, but to reduce it at high RPM for improved power, outside the test range for pass by noise standards.

goodvibe · Post by **goodvibe** » Sun Oct 23, 2005 5:12 am

Quote, originally posted by Digger Â»I wonder if it works and if it would fit is a standared exaustTotal waste on stock exhaust. you're already tuned for good torque. This might only work on an over 2.5" exhaust piping where it's actually too large before the motor's on the cam. There isn't any top end gain for our cars with exhausts over 2.5" so it just plain doesn't help. A different way of saying the same thing as MadBill.

Digger · Post by **Digger** » Mon Oct 24, 2005 4:22 am

I figured. All My experiance in R/C boat raceing told me this was a load of bunck

cknight725 · Post by **cknight725** » Mon Oct 24, 2005 5:17 am

Quote, originally posted by MadBill Â»The story of backpressure helping power at any RPM is totally untrue. Backpressure is no better for your car than dragging the brakes. Now, Now, Bill!! -- That all depends on your definition of the word "power". If power = torque, then backpressure is KEY to keeping torque up, if power = horsepower, then backpressure should be reduced at all costs. Even still, reducing backpressure can do funny things with the HP curve too -- your peak HP generally won't change but it may move up or down the curve depending on combustion chamber design, cam profile, valve overlap, exhaust system design.Look in Jegs or Summit sometime -- you'll notice "Truck" cams or "Street" cams have either much lower duration or lift than "Drag" cams -- duration and lift both affect the amount of backpressure is in the intake and exhaust systems and directly affect how much torque is made and where the peak HP and torque are made. Truck and Street cams are designed to either maintain or make more torque than stock (and usually make more HP too, but not by sacrificing torque) because in street driving torque is fun! Drag cams don't want to make lots of torque because torque breaks the tires loose -- they forcus on making more HP because those gains are usually high in the RPM band and don't affect traction anywhere near as much as changing torque would. Course this could get very geeky as there are hundreds of variables and "what if" this and "what if" that situations -- BUT -- this should not be considered a fix all, only one more thing that can be used improve torque if the exhaust system is engineered around it, which our stock systems are certainly not..

MadBill · Post by **MadBill** » Mon Oct 24, 2005 7:07 am

OK, so let's pound a potato into your tailpipe and then I'll race you... on foot! (o:b

Create backpressure and gain low end torque.

Create backpressure and gain low end torque.

Re: Create backpressure and gain low end torque. (d_m_kolb)

Re: Create backpressure and gain low end torque. (baddkkarma)

Re: Create backpressure and gain low end torque. (Admin II)

Re: Create backpressure and gain low end torque. (Flip-Side)

Re: Create backpressure and gain low end torque. (Admin II)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (Vibey)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (Flip-Side)

Re: Create backpressure and gain low end torque. (andrewmva)

Re: Create backpressure and gain low end torque. (NovaResource)

Re: Create backpressure and gain low end torque. (Admin II)

Re: (northvibe)

Re: (goodvibe)

Re: Create backpressure and gain low end torque. (shibaman)

Re: Create backpressure and gain low end torque. (joatmon)

Re: (Digger)

Re: (goodvibe)

Re: Create backpressure and gain low end torque. (MadBill)