Ok, I think I finally got everything I was looking for. There are several
major compression bends just before the cat (y-pipe) where it looks like
it's actually 1/2" narrower. The rest of the pipes, except for the
tailpipe hump over the axle appears just straight.
Thanks!
-- Chris Reck Bloomington, IL'99 Dakota Sport + CC 4x4 V6 (Deep Amethyst) Shaved and polished V8 TB, Autolite 3923, 180 Thermostat, 7.5mm Bosch plug wires, Custom K&N 6x9 air intake, Rancho RSX shocks, Pioneer full audio system, Jet Stage 1 Chip, BF Goodrich 32x11.5r15 T/A KO tires <david.clement@verizon.net> wrote in message news:cm6nuk$85s$1@bent.twistedbits.net... > > You aren't going to see a big difference in a cat back system on an > otherwise > stock engine anyway, regardless of the size of the tailpipe. The > improvement > you do see is going to come from the less restrictive muffler. > > FWIW, the pipes that you get with a cat back system are manderal bent > compared > to compression bent in a stock system. They will flow better than the > stock > pipe because they do not have the crimps from bending. The difference is > likely > not noticable to the seat of your pants. > > Again FWIW, I have the Flowmaster Cat back system that came with a 2.5"in > 3"out > three chamber muffler and a 3" tailpipe on my 3.9. It made a noticable > differnence above 3000 rpm but no change below that rpm. The v8 throttle > body > and air intake also only helped in the upper rpm range. > > If I hadn't got the system for x-mas from my wife I would have just cut > out the > stock muffler and replaced it with a performance muffler. IMHO, If you are > looking save some money swap the muffler. If you are looking for less > hassles > installing it go for the cat back regardless of whether it has a 3" > tailpipe or > 2.5" tailpipe. > > Dave Clement > 99 SLT+ CC 4x4 > > In article <cm6kaf$1nn$1@bent.twistedbits.net>, chris92@insightbb.com > ("Chris > Reck") writes: >> >> >> Hi, >> >> It's been a while, but I was away from my desk. I went under and >> measured >> my pipes. It seems that I have 2.5" OD pipes before and after the Cat >> and >> Muffler. Is this right? I'm now questioning myself on how replacing a >> stock 2.5" pipe with a new 2.5" pipe (granted different muffler), would >> make >> that big of a difference? >> >> Is increasing 1/2" really that big of an increase, or am I all wet? >> >> Also, the WLK-17353 lists for my truck, but it also lists it as a 3" >> pipe >> all the way out. >> >> I was also looking at getting the Catalytic Converter CTO-9185 from >> Summit >> as well (since mine is going bad). This is a 2.5" in and out (same as >> stock). >> >> Should I be looking at this or do I just need to keep my pipes and >> replace >> the muffler (replacing entire Cat pipe due to low cost and ease of >> install). >> >> Thanks! >> >> -- >> >> -- >> Chris Reck >> Bloomington, IL >> >> '99 Dakota Sport + CC 4x4 V6 (Deep Amethyst) >> Shaved and polished V8 TB, Autolite 3923, 180 Thermostat, 7.5mm Bosch >> plug >> wires, >> Custom K&N 6x9 air intake, Rancho RSX shocks, Pioneer full audio system, >> Jet Stage 1 Chip, BF Goodrich 32x11.5r15 T/A KO tires >> >> ""Jason Bleazard"" <dml@bleazard.net> wrote in message >> news:63593.199.64.0.252.1098996923.squirrel@janor.ath.cx... >> > >> > On Wed, October 27, 2004 8:16 pm, Chris Reck said: >> >> >> >> Do you have a part number at Summit, or a Manufacturer's part number? >> >> The >> >> only thing I saw listed was a 3" pipe. >> > >> > If memory serves (I might be able to find the receipt if you really >> > need >> > to know for sure), the kit I got is WLK-17443. Fits '92 - '96 Dakotas. >> > Currently $113.88 from Summit. That's what I got, and it works for me. >> > Your mileage may vary. >> > >> > Summit has a whole list on their site under "Online Store < Exhaust < >> > Exhaust Systems & Kits < Dynomax Super Turbo Exhaust Systems". Looks >> > like >> > WLK-17353 fits '97 - '99 Dakotas, currently $199.95. >> > >> > I think Dynomax might also have an application guide on their own site. >> > That would probably have more information. >> > >> > -- >> > Jason Bleazard http://www.bleazard.net Burlington, Ontario >> > his: '95 Dakota Sport 4x4, 3.9 V6, 5spd, Reg. Cab, white >> > hers: '01 Dakota Sport 4x4, 4.7 V8, Auto, Quad Cab, black >> > >> > >> >>
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