Renntech C250!
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
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From: St. Paul, MN
2011 E550 4Matic
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1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
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From: UCF area Orlando/West Palm Beach FL.
c350coupe, Gencoupe R-spec
the renntech tune for the w204 c350 only yields about 10-15hp there gains are a little exaggerated (told by a renntech employee who is no longer with them). they didnt offer a tune for the c300, if i remember correctly. but the turbo c250 should be able to get better gains, even more if the cats are removed.
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
the renntech tune for the w204 c350 only yields about 10-15hp there gains are a little exaggerated (told by a renntech employee who is no longer with them). they didnt offer a tune for the c300, if i remember correctly. but the turbo c250 should be able to get better gains, even more if the cats are removed.
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From: UCF area Orlando/West Palm Beach FL.
c350coupe, Gencoupe R-spec
on any force induction car the cats hold back/restrict alot of the power, removing the cats, and running a free flowing downpipe/test pipe will improve better exhaust flow from the turbo, their for improving the TQ/HP. example I also have a 2.0t genesis coupe (my weekend car) I did a full turbo back exhaust. removing cats and replacing them with a 3" downpipe, and my gains were about 22hp, couple that with a tune and your talking about 50+ hp/tq gains.
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
on any force induction car the cats hold back/restrict alot of the power, removing the cats, and running a free flowing downpipe/test pipe will improve better exhaust flow from the turbo, their for improving the TQ/HP. example I also have a 2.0t genesis coupe (my weekend car) I did a full turbo back exhaust. removing cats and replacing them with a 3" downpipe, and my gains were about 22hp, couple that with a tune and your talking about 50+ hp/tq gains.
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From: UCF area Orlando/West Palm Beach FL.
c350coupe, Gencoupe R-spec
If you wanted to do a custom quad exhaust you could: remove cats replace with a straight pipe, run straights to an X-pipe, then 2 pipes running from that too 2 mufflers with 2 tips on each muffler. wouldn't even cost more than $1000
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
Of course you can, removing the cats has nothing to do with what muffler set- up you wanna do. the cats are basically right under the engine, you could even remove the cats and still use your stock exhaust.
If you wanted to do a custom quad exhaust you could: remove cats replace with a straight pipe, run straights to an X-pipe, then 2 pipes running from that too 2 mufflers with 2 tips on each muffler. wouldn't even cost more than $1000
If you wanted to do a custom quad exhaust you could: remove cats replace with a straight pipe, run straights to an X-pipe, then 2 pipes running from that too 2 mufflers with 2 tips on each muffler. wouldn't even cost more than $1000
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From: St. Paul, MN
2011 E550 4Matic
the renntech tune for the w204 c350 only yields about 10-15hp there gains are a little exaggerated (told by a renntech employee who is no longer with them). they didnt offer a tune for the c300, if i remember correctly. but the turbo c250 should be able to get better gains, even more if the cats are removed.
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From: Delaware
2004 Mazda6, 1993 RX7
Well hot damn! We might be in business then. I have yet to actually see what the exhaust setup looks like, so im not sure what sort of cat setup the car has, whether its a cat off the header or closer to the muffler/midpipe. I need a bolt on bc im leasing the car and need to be able to return the car to stock.
With the 7, Mazda used a weld bead ring inside the 2nd cat to reduce the oem bore from 2.45" to 2.25", a significant hidden restriction!
Check out another 1.8T, add the proper www prefix:
ww.atpturbo.com/root/releases/release050304.htm
.
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
Also need to consider car inspection, if applicable. In Delaware, they do a visual check to look for cats, even use a floor mirror. They also tap an ecu access port to check emissions that may trigger a Failure, if no cats are used. On the 7, I got away with a DP to replace the 1st cat, but used a high flow 3" cat in the 2nd position.
With the 7, Mazda used a weld bead ring inside the 2nd cat to reduce the oem bore from 2.45" to 2.25", a significant hidden restriction!
Check out another 1.8T, add the proper www prefix:
ww.atpturbo.com/root/releases/release050304.htm
.
With the 7, Mazda used a weld bead ring inside the 2nd cat to reduce the oem bore from 2.45" to 2.25", a significant hidden restriction!
Check out another 1.8T, add the proper www prefix:
ww.atpturbo.com/root/releases/release050304.htm
.
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on any force induction car the cats hold back/restrict alot of the power, removing the cats, and running a free flowing downpipe/test pipe will improve better exhaust flow from the turbo, their for improving the TQ/HP. example I also have a 2.0t genesis coupe (my weekend car) I did a full turbo back exhaust. removing cats and replacing them with a 3" downpipe, and my gains were about 22hp, couple that with a tune and your talking about 50+ hp/tq gains.
on my GT-R, the secondary cats are in the midpipe. I replaced my stock restrictive midpipe with a catless HKS midpipe and noticed a pretty good gain, not just in sound, but also in power. the primary cats in the downpipes are next to be replaced. my only issue is that the GT-R already smells like fuel with the secondary cats gone, the fuel smell is going to be horrendous with no cats at all and I'm going to get soot on my bumper frequently. but, the ability to throw flames from the tips makes up for that.
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1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
yup! that's why I said if Renntech did a downpipe, then that may give some good power.
on my GT-R, the secondary cats are in the midpipe. I replaced my stock restrictive midpipe with a catless HKS midpipe and noticed a pretty good gain, not just in sound, but also in power. the primary cats in the downpipes are next to be replaced. my only issue is that the GT-R already smells like fuel with the secondary cats gone, the fuel smell is going to be horrendous with no cats at all and I'm going to get soot on my bumper frequently. but, the ability to throw flames from the tips makes up for that.
on my GT-R, the secondary cats are in the midpipe. I replaced my stock restrictive midpipe with a catless HKS midpipe and noticed a pretty good gain, not just in sound, but also in power. the primary cats in the downpipes are next to be replaced. my only issue is that the GT-R already smells like fuel with the secondary cats gone, the fuel smell is going to be horrendous with no cats at all and I'm going to get soot on my bumper frequently. but, the ability to throw flames from the tips makes up for that.
Thread Starter
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
Thread Starter
Member
Joined: Mar 2011
Posts: 119
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From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
Thread Starter
Member
Joined: Mar 2011
Posts: 119
Likes: 0
From: Richmond, VA
1989 300TE, 1981 380SL, 1990 325I, 2002 Overland, 1976 BMW 2002,
