The XERD longtubes are really the only longtubes I can find any information or even owner experiences with. Where are the others?

XERD owners, is there any rasp with the longtubes, like what people can get with non-resonated test pipes?
Also, what kind of increase in sound did you experience adding the XERD headers?

 

350Evo is working on some long tube headers. I dont know if they have been released yet.

 

And I'll add that 350EVO currently uses the XERD headers, so they've found something lacking with them or else they would not embarked on a expensive R&D project to make their own headers.
You can run a seach and find EVO's post on their announcement for their headers, they look really promising.

 

A pic of the 350EVO headers from another thread...

 

if i remember correctly they originally used nismo, then xerd, and now crawfords. they are prototyping a new long tube design, the sound is loud at wot but quieter and deeper at idle and low rpms. it is raspy at wot but i like it personally. the power is definitely there.

 

I would love to get a set of the XERDs but I am planning on getting the Turbonetics single turbo system next year and that kit deletes the cats. So these will not be an option anymore for me. I am now eyeing the Crawford headers!!

Zach

 

I installed them with stock exhaust. It has definitly more Power you can fell it very much. But the Sound is bad. Strong rasp from 2000-4000rpm sounds like a rattlesnake. Without the raspiness it would sound sweet. Like racingcar, very metallic and voluminous.

The problem is you can´t drive it quietly. The smallest gasp on the Gas makes al loud noise.

Sorry, but i only would use them if driving my Z on Racetracks.

cu

 

Verpeiler,

I had the same setup that you had and the rasp was annoying. Installed Injen true dual exhaust and to my ears delight , NO MORE RASP.

Powertrip and I have the same exhaust setup and I am very pleased with performance. My opinion Xerd headers and Injen exhaust are a good combo.

 

I know that it is a good setup but i live in germany. The Injen and the Xerds together are to loud for my country. I would loose my license very fast.

cu

 

Simple solution---Put your Z on the next ship out of Germany and move to Florida. No cats required.

 

I am the only XERD dealer allowed to sell to the Z forums now so if you need them, I have them still!

I have heard from some they make some rasp but it all depends on the exhaust you are using.

 

Why are you the "only one allowed to sell to the Z forum"???

Just curious

 

So, XERD longtubes add rasp to the stock exhaust and the rasp can be eliminated or significantly reduced with some aftermarket exhausts.... I get that right ?

Also, the gains the XERDs give are all in the upper RPMs and all to the horsepower. No gains in low RPM or torque production. That right?


Since I am looking to keep the stock exhaust rear section and/or keep noise of the exhaust to a minimum and that I am looking to increase low RPM and torque output, these dont sound anything like what I am looking for.

Just cant see spending $1200'ish on Crawfords and another $350'ish on resonated test pipes ($1500-$1600) when a good longtube header in the $700-$800 range will do everything I want. No, I am not worried about SMOG, since this is an 04 car it wont have to be SMOG'ed till 2009. Five years of fun and finding someone to fudge the cars visual inspection. It had better pass the sniffer though, have to be atleast a little enviromentally correct.

 

All the gains with my setup are in the upper rpm range and no real torque gains. Lots of hp up top.