re. Stebro [was: 4kq Exhaust time]

[Ben Swann]

Ken,

There is a reason Stebro went with the 2.5 or so(forget exactly, but I have
the specs somewhere).  They tested larger diameters on the 5000 Turbo
including 3".  They lost too much velocity in the system resulting in
drivability problems.  3" is way too much they concluded unless the car
would be driven wide open all the time.

My observation is that the Stebro system including larger Cat will provide
soo much flow improvement over stock that you would now have do develop a
special downpipe and overcome other bottlenecks in the system before having
the need to go with a larger system.

For a system that just bolts on with no fitment problems, Stebro is a
winner and is worth the money.  This being said by someone who will try to
squeeze a penny every which way for it's blood.

Ben
p.s. the whole system was around $1k for 5ktq or around $700 for cat back

[Ben Swann bswann at worldnet.att.net" <bswann at worldnet.att.net  wrote:
>
> p.s. noted quality and fitment improvement in the 5ktq cat back system
> over the 4kq one now 2 years old.  According to Dan at Stebro, they
> have made imprvements overall.

Ken replied:
In my opinion, Stebro needs to make improvements in the diameters of their
exhaust.  Namely, offer some 3" systems!

I thought their stuff was almost stock diameter, particularly the 5kcstq
stuff.  I also thought someone said the  backpressure wasn't reduced all
that much.  Does anyone have any info in this area.  I'd like to be able to
justify replacing a totally intact stock exhaust, for performance (and fuel
economy and appearance and sound, but mostly for POWER).

Just sell me the pipes! :-P
I'll put my own muffler of choice on (probably Borla).

On a related note, I emailed 2Bennett about their stainless 3" catback for
turbo 4kq's, asking for the price.   I haven't heard back, but I'm thinking
it's up there around $1.5k.  Is that about right?  <choke>

I'll probably blow the dust off the ole' mig welder and try to fit myself
up a catback using separate pieces.
Someday I'll give it a shot.

Later,

Ken]