fccs

iTrader: (26)

So, mods in sig, with cutout closed (going to silent stock catback) I can spin from 1st to 3rd, and chirp 4th if I try. Open, it seems to hook MUCH better and doesn't spin that bad at all. Is it just because the lowend torque is there with it closed compared to open? Or am I actually loosing power with it open. I have always thought open is good for racing since it moves the power UP in the powerband more, which therefore causes it to spin less and have more power. But I would like someone to verify that for me. Thanks

406malibu

you are making more power with it open. I've also noticed that the low end torque is a little less with it open, but it pulls much harder up top. one of the guys around me (cam only) dynoed 30 hp more cutout open vs going through his chokemasters.

Ls1N20

iTrader: (6)

Always heard with a cutout your lowend decreases but top end inscreases.

fccs

iTrader: (26)

Yea im just making sure, It does pull harder up top with it open, but it doesnt spin like at all down low from a roll like it does with it closed

406malibu

what would be cool is if someone could design one to stay closed up untill around 3k rpm and then flip open almost instantaneously. Some of the corvettes do something similar, but they open on WOT, not at a certain rpm.

jimbo98z

iTrader: (3)

That's kinda weird. I wouldn't think it would take away enough to make a noticeable difference in tire spin.

When you say it doesn't spin that bad at all, what exactly do you mean? Is it possible it's spinning close to the same amount and just doesn't sound like it because you can't hear the tires barking?

fccs

iTrader: (26)

Well when both is warmed up it seems they hook better either way. When driving around with the cutout open for example for a good 20minutes, the tires will HOOK pretty decently. If I drive around with the cutout closed for 20minutes, they will spin more then it would with the cutout open for 20minutes. I think the cutout is heating up the tires actually..lol