How to gut your primary cats (Dyno results to come soon)
08-10-14, 05:42 PM
#106
When someone drives down the street with the hood open and a fan blowing into the engine bay, I'll accept a dyno test as fair. Until then, trapspeed rules all.
You guys have no idea how hard the OEMs work to produce consistent dyno numbers. None. We don't have even half the necessary instrumentation to produce a fair, head to head dyno at any aftermarket shop. That's just part of why I think dynos are a poor comparison at best from car to car.
You guys have no idea how hard the OEMs work to produce consistent dyno numbers. None. We don't have even half the necessary instrumentation to produce a fair, head to head dyno at any aftermarket shop. That's just part of why I think dynos are a poor comparison at best from car to car.
I personally believe a dyno comparison done at the same time on the same dyno conducted in the same manner is the best bet to end this debate. I went from running 12.2 to 11.9's with the addition of headers so I'm a firm believer in the header gains and just have a hard time imagining the stock manifold could flow just as well with gutted cats.
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08-11-14, 04:45 AM
#108
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In that case I'm anxiously waiting for the gutted cat guys to trap in the 120's like toothdoc and I have done without N2O.
I personally believe a dyno comparison done at the same time on the same dyno conducted in the same manner is the best bet to end this debate. I went from running 12.2 to 11.9's with the addition of headers so I'm a firm believer in the header gains and just have a hard time imagining the stock manifold could flow just as well with gutted cats.
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I personally believe a dyno comparison done at the same time on the same dyno conducted in the same manner is the best bet to end this debate. I went from running 12.2 to 11.9's with the addition of headers so I'm a firm believer in the header gains and just have a hard time imagining the stock manifold could flow just as well with gutted cats.
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Being stuck with 1000+DA all year is a killer lol
08-11-14, 11:05 AM
#110
In that case I'm anxiously waiting for the gutted cat guys to trap in the 120's like toothdoc and I have done without N2O.
I personally believe a dyno comparison done at the same time on the same dyno conducted in the same manner is the best bet to end this debate. I went from running 12.2 to 11.9's with the addition of headers so I'm a firm believer in the header gains and just have a hard time imagining the stock manifold could flow just as well with gutted cats.
Subscribed!
I personally believe a dyno comparison done at the same time on the same dyno conducted in the same manner is the best bet to end this debate. I went from running 12.2 to 11.9's with the addition of headers so I'm a firm believer in the header gains and just have a hard time imagining the stock manifold could flow just as well with gutted cats.
Subscribed!
08-11-14, 04:56 PM
#111
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Lets see what you cali guys can do compared to the North East lol.
09-24-14, 08:25 AM
#113
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I gutted my cats last night while installing a Borla exhaust.. pretty straight forward especially with the exhaust off. As the OP mentioned, it gets dusty and dirty so have some kind of face mask.
I ended up using O2 spacers and so far its been fine with no CEL. Ive only driven 30km so we will see how it goes.
I used these spacers:
http://www.kseriesparts.com/cr/VIB-11620.html
And they come with different size inlet ports to adjust. I started with the smallest one and works great so far. Install was a little tricky with the O2 wires, but not bad
I ended up using O2 spacers and so far its been fine with no CEL. Ive only driven 30km so we will see how it goes.
I used these spacers:
http://www.kseriesparts.com/cr/VIB-11620.html
And they come with different size inlet ports to adjust. I started with the smallest one and works great so far. Install was a little tricky with the O2 wires, but not bad
09-24-14, 09:26 AM
#115
I gutted my cats last night while installing a Borla exhaust.. pretty straight forward especially with the exhaust off. As the OP mentioned, it gets dusty and dirty so have some kind of face mask.
I ended up using O2 spacers and so far its been fine with no CEL. Ive only driven 30km so we will see how it goes.
I used these spacers:
http://www.kseriesparts.com/cr/VIB-11620.html
And they come with different size inlet ports to adjust. I started with the smallest one and works great so far. Install was a little tricky with the O2 wires, but not bad
I ended up using O2 spacers and so far its been fine with no CEL. Ive only driven 30km so we will see how it goes.
I used these spacers:
http://www.kseriesparts.com/cr/VIB-11620.html
And they come with different size inlet ports to adjust. I started with the smallest one and works great so far. Install was a little tricky with the O2 wires, but not bad
09-24-14, 09:52 AM
#116
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In what regard?
Coming from the Audi community gutting cats was always a decent option for those that either couldnt afford headers/downpipes or wanted cheap mod. Adding the spacers instead of the electronic conditioners was my choice in not wanting to splice into the ECU.
Coming from the Audi community gutting cats was always a decent option for those that either couldnt afford headers/downpipes or wanted cheap mod. Adding the spacers instead of the electronic conditioners was my choice in not wanting to splice into the ECU.
09-24-14, 11:08 AM
#117
In what regard?
Coming from the Audi community gutting cats was always a decent option for those that either couldnt afford headers/downpipes or wanted cheap mod. Adding the spacers instead of the electronic conditioners was my choice in not wanting to splice into the ECU.
Coming from the Audi community gutting cats was always a decent option for those that either couldnt afford headers/downpipes or wanted cheap mod. Adding the spacers instead of the electronic conditioners was my choice in not wanting to splice into the ECU.
09-24-14, 04:50 PM
#120