Strange Outcome...
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From: Hamilton
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Strange Outcome...
Okay, a little background:
Since I've had my car, there has been an exhaust leak in three places:
-One near the Y-pipe where it meets the cat because all I could do was clamp it since I had no access to a welder
-One at the rear flange of the cat...BIG leak. Went untouched for same reason
-One where the pipe from the cat meets the muffler...untouched for same reason.
Now, not only was my car LOUD...I kinda liked it, but it sort of seemed slightly bogged down...like there was no throttle response. Needle on the tach would shoot up while I slammed on the gas, but nothing happened at the wheels for a good quarter second.
Now, I FINALLY got my car on my buddies lift and welded up the system, so no leaks. Now, when I take off from a stop, I TAKE OFF from a stop...like there was 15 extra horsepower down low that were waiting to be unleashed or something, but the throttle response is through the freaking roof now.
::Takes breath:: So my question is...does it seem likely that patching up exhast would be beneficial to the performance to my car? If anything I thought it would have been worse. I dreaded welding it up but I had to due to the fact that the hole behind the cat finally rotted through and the pipe fell out.
Any insight is appreciated.
_Clark
Since I've had my car, there has been an exhaust leak in three places:
-One near the Y-pipe where it meets the cat because all I could do was clamp it since I had no access to a welder
-One at the rear flange of the cat...BIG leak. Went untouched for same reason
-One where the pipe from the cat meets the muffler...untouched for same reason.
Now, not only was my car LOUD...I kinda liked it, but it sort of seemed slightly bogged down...like there was no throttle response. Needle on the tach would shoot up while I slammed on the gas, but nothing happened at the wheels for a good quarter second.
Now, I FINALLY got my car on my buddies lift and welded up the system, so no leaks. Now, when I take off from a stop, I TAKE OFF from a stop...like there was 15 extra horsepower down low that were waiting to be unleashed or something, but the throttle response is through the freaking roof now.
::Takes breath:: So my question is...does it seem likely that patching up exhast would be beneficial to the performance to my car? If anything I thought it would have been worse. I dreaded welding it up but I had to due to the fact that the hole behind the cat finally rotted through and the pipe fell out.
Any insight is appreciated.
_Clark
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Joined: Nov 2004
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From: K-W ONT
Car: 89 I-ROC
Engine: 305
Transmission: T5
I couldn't see why it wouldnt help. Their would be less turbulance increasing the velocity of the gas, giving better airflow which then gives you more power.
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From: Hamilton
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Originally posted by Tyler88
I couldn't see why it wouldnt help. Their would be less turbulance increasing the velocity of the gas, giving better airflow which then gives you more power.
I couldn't see why it wouldnt help. Their would be less turbulance increasing the velocity of the gas, giving better airflow which then gives you more power.
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Joined: May 2004
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From: Brighton, CO
Car: '72 Chevy Nova
Engine: Solid roller 355
Transmission: TH350
Axle/Gears: 8.5" 10-bolt 3.73 Posi
The holes, while getting air out quicker, impede airflow in the exhaust. A longer, un rusted, exhaust tends to give more downlow feel as it moves the powerband down.
If your exhaust leaks were big it is likely the powerband had been moved up quite a bit and you couldn't "feel" the tq as much.
A cutout just after the Y-pipe is actually the fastest setup, short of open headers.
If your exhaust leaks were big it is likely the powerband had been moved up quite a bit and you couldn't "feel" the tq as much.
A cutout just after the Y-pipe is actually the fastest setup, short of open headers.
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