Looks great, can't wait to check it out. I was hoping you would call today and I could have made a run over. I have to go to Jennings this week so let me know a good day to drop in and get the Banks.

I emailed you my number, did you get it?

 

i am at ft polk, maybe i can make it....any directions

 

That is my luck, I will be working on the 11th. Well maybe we will all get together eventually.

 

i am at ft polk, maybe i can make it....any directions

just look up thunder racing in Baton Rouge

 

Sounds real nice!!!

 

very nice!! to bad, i willl be in franklinton this weekend. let us know the results!!

so i may be swayed to the long tube headers, anything special or straight bolt on?

 

can't find dyno results for long tube headers?

are resonators gone also?

 

Why didnt you put the X pipe right in front of the mufflers and eliminate all that extra bending in the right side pipe?

 

Why didnt you put the X pipe right in front of the mufflers and eliminate all that extra bending in the right side pipe?

"Equal length" for each bank to have equal resistance/travel before intersecting the X-pipe where the exhaust pulses are balanced

 

Except the extra bends will offset the balacing of the length.

There is some myth to equal length header theory anyway, at least on the SBC and LS1 from what I've seen, read, and experienced in drag racing.

Also, the intake manifold itself on any of the new fuel injected V8s out there, Nissan, Ford, Dodge, or Chevy, all come with composite manifolds that are fed through front mounted throttle-bodys. Guess what? The rear cylinders are far more lean than the front cylinders because of the way the air rushes to the back of the manifold. Thus, even on the intake side there is no true "balance," and no, the ECU does not watch each cylinder individually to correct for this.

If you don't believe me, plug in a wideband to each cylinder and have a look. Some cylinders may be burning off a leaning air-fuel mixture than others, so why support each with the exact same exhaust port/primary length?

Not trying to be a jerk, just letting people know that it doesn't matter as much. The difference is made in primary sizing, collector design, x-pipe design, and exhaust pipe sizing, because that's when all the different exhaust pulses are tossed together. The difference at our horsepower levels won't care either way, nor will the extra bend really make a difference.

It should make awesome torque and horsepower numbers. The dual 2.5" pipes are a good choice for our HP level. Now, if we could get some tuning software...

 

What does some cylinders burning leaner than others have to do with exhaust flow? You still have the same amount of "back" and "front" cylinders on each bank, making each side the same, right?

And why the talk about headers? These are pipes, not headers.

 

Except the extra bends will offset the balacing of the length.

There is some myth to equal length header theory anyway, at least on the SBC and LS1 from what I've seen, read, and experienced in drag racing.

Not trying to be a jerk, just letting people know that it doesn't matter as much. The difference is made in primary sizing, collector design, x-pipe design, and exhaust pipe sizing, because that's when all the different exhaust pulses are tossed together. The difference at our horsepower levels won't care either way, nor will the extra bend really make a difference.

It should make awesome torque and horsepower numbers. The dual 2.5" pipes are a good choice for our HP level. Now, if we could get some tuning software...

I was talkin equal dual exhaust length not header length......every x-pipe I’ve seen has been close to equal length b4 the x-pipe...mustang, viper, vette....and i don't question their credibility so i figured it was worth a try...and due to a the gas tank on a titan ...the exhaust is best dumped out the passenger side that’s why i added more length to the passenger side to equal the drivers side bank.

we will see what the dyno says.....

 

I think equal length would be preferred if you could do it without adding restrictive bends to get it. the whole point of upgrading the exhaust is to remove restrictive bends, not add them.

Hope it works out for ya.....

 

why didnt you just buy the borla cat back system? Looks like a nice system. Were you after the X pipe, and since it didnt have it, made your own?

 

why didnt you just buy the borla cat back system? Looks like a nice system. Were you after the X pipe, and since it didnt have it, made your own?

The Borla offers less for more money...it's only 2.25'' pipe......no x-pipe ....and i hate the exit points...plus with offroad headers i don't think 1 muffler would work 4 me when you delete the stock resonators she is loud..

 

why didnt you just buy the borla cat back system? Looks like a nice system. Were you after the X pipe, and since it didnt have it, made your own?

Because it would have added another 40% to the price. Plus the Borla in my opinion looks silly as the driver side exit crosses right behind the rear diff on the low side.

 

i don't think your rear passenger side tire likes you anymore.

 

i don't think your rear passenger side tire likes you anymore.

LOL...Yea....he gets rotated pretty often.....and seesm to keep askin me for a detroit trutrac

 

Because it would have added another 40% to the price. Plus the Borla in my opinion looks silly as the driver side exit crosses right behind the rear diff on the low side.

I saw the borla for $699. How thats 40% more confounds me to no end.

I dont mind the low pipe, to each his own.

Lets not forget its top grade stainless as well.

 

The Borla offers less for more money...it's only 2.25'' pipe......no x-pipe ....and i hate the exit points...plus with offroad headers i don't think 1 muffler would work 4 me.....

I had a banks system.....once i took out the resonators and the cats it was WAY 2 loud...

Well, the borla is $699, you spent what, $650? The borla without resonators and cat might sound right?

And they claim the smaller pipe is better, not worse. I tend to agree. They have millions of dollars worth of research and development, I dont.

But if you dont like the rear exit, thats all the reason you needed really.

 

Well, the borla is $699, you spent what, $650? The borla without resonators and cat might sound right?

And they claim the smaller pipe is better, not worse. I tend to agree. They have millions of dollars worth of research and development, I dont.

But if you dont like the rear exit, thats all the reason you needed really.

Where did you see Borla for $699? Just curious. Cheapest I've seen is $780.

 

I think mossy has it for $699

http://mossyperformance.com/product/manufacturer.php?man_id=64&cat_id=30&model_id=32

 

I think equal length would be preferred if you could do it without adding restrictive bends to get it. the whole point of upgrading the exhaust is to remove restrictive bends, not add them.

Hope it works out for ya.....

Never heard of "Mandrel" Bends?

Well, the borla is $699, you spent what, $650? The borla without resonators and cat might sound right?

And they claim the smaller pipe is better, not worse. I tend to agree. They have millions of dollars worth of research and development, I dont.

But if you dont like the rear exit, thats all the reason you needed really.

I made this thread for informational purposes and for folks like me who love to tweak and test the results……NOT for someone to imply I made a bad decision. If you don't like someone’s ideas just keep it to yourself. Folks like you make people not want to post decent info

If you think 2.25'' is best for a/my titan with off-road headers where I have 2.5’’ collectors and no resonators something is wrong...u should do a little research and pay closer attention to the thread b4 u chime in. Dual 2.5'' is optimal for my output and recommended for up to 450 hp...Without killing low end

The factory Borla I’m sure was developed 4 folks who want to interface an otherwise stock exhaust. 2.25'' is fine for a truck with stock resonators...and cats...the bottle neck is in the resonators (1 7/8'' approx) and the cats NOT the exhaust.

Plus i just cant get over seeing the drivers side pipe in the back of the rear diff...it's in plain veiw of any driver and i think it looks like crap

 

whoaaa...easy there.

Im not implying that you made a bad decision. If thats the way I came across, I apologize.

I think you did a neat job and it took a lot of time and effort, and it looks professional. My hats off to you.

I was just trying to pick your brain and weigh the pros and cons of different aproaches, basically a pre made system versus what you did.

What kind of headers are u running? What do u mean "off road"? Do the factory exhaust manifolds have the cat. coverters built into them, and is this what you mean? did u have to remove the converters to run aftermareket headers?

 

Update your sig pic!