Will catless downpipes alter exhaust note by alot on a otherwise stock exhaust?

[GO135i007]

Originally Posted by RnmEvo9

When you guys say with this simple setup of JB4, DCI, and catless downpipes can yield close to 400rwhp, I'm assuming this is with race gas? I don't think I've seen anything close to that on pump 93 octane. The most I've seen was about 370rwhp on a dynojet chassis which is respectable.

One more thing, how much of a pain is it to install the downpipes? Downpipe was a breeze on the Evo, but the removal of the o2 housing was such a pain in the ass.

Thanks again.

With the mods in my signature I am putting down 420whp and 493 torque to the wheels on 93 octane gas.

[The1]

Originally Posted by GO135i007

With the mods in my signature I am putting down 420whp and 493 torque to the wheels on 93 octane gas.

which JB3 map? 6-7?

I'm aiming to do something like this, but might put the mad dad whisper exhaust on to add some more free flow. but still leave the secondary cats in place.

[GO135i007]

Originally Posted by The1

which JB3 map? 6-7?

I'm aiming to do something like this, but might put the mad dad whisper exhaust on to add some more free flow. but still leave the secondary cats in place.

Map 7

Yea, I have a Riss Racing axel back in my closet that has been in there for like 6 months. I'd like the extra sound and breathing but then again I like the stealthness and quietness I have now. My car is such a sleeper. Surprises people all the time (911's, M3's, Vettes, etc.)

[The1]

ran map 7 for a few minutes just to see one time, before any extra pices were added (i know not recomended, that's why for a short time)

and i'm certain it added an extra 20whp from map 5 without the bolt ons. Good to know what it's capable of with the full bolt ons.

[Timberwolf]

Originally Posted by GO135i007

Map 7

Yea, I have a Riss Racing axel back in my closet that has been in there for like 6 months. I'd like the extra sound and breathing but then again I like the stealthness and quietness I have now. My car is such a sleeper. Surprises people all the time (911's, M3's, Vettes, etc.)

What kind of dyno did you make 420/490 on? That's nuts! What am I missing here?

[mke135i]

Originally Posted by GO135i007

With the mods in my signature I am putting down 420whp and 493 torque to the wheels on 93 octane gas.

Where's the dyno graph? This is very hard to believe.

[Yogijet]

Welcome Rnm. You'll have a lotta fun over here which I see has begun in earnest.

[RnmEvo9]

Originally Posted by GO135i007

With the mods in my signature I am putting down 420whp and 493 torque to the wheels on 93 octane gas.

420whp/415wtq were my final numbers that I enjoyed on the same day that it was stolen from me. With that kind of power at your disposal made it my perfect daily driver, although first gear was useless for me (yeah I spun all my wheels lol). I achieved those numbers after I added an intake with a retune on e85 fuel, but if you are doing that on pump gas, then wow, congrats.