have any of you guys ever done electric exhaust cutouts for your lexus? .. will it have a CEL? .. i was thinking about installing one for my sc430, but im not sure if it would have any issues. also does anyone have a picture of the stock factory exhaust from under the car? .. i would like to see if i have space for it under there..

 

I don't remember seeing an electric cutout on a SC430 specifically. As long as its after the cats, there shouldn't be any CEL.

 

thanks! .. ill probably be doing this soon..

 

why would you want an exhaust cutout? just to be quieter when you need it to be?

 

I have thought about the same for my new custom exhaust. But i think there has to be some kind of whats it called.. Back pressure? For engine to work best. Or you will loose power and just have a loud noisy sound like the exhaust pipe broke before the muffler. Anyone else knows something about this?

 

yea... i dont want to be loud all the time.. just when i want to have some fun... so electric cutout will keep it quiet until i want to be heard...

i was looking at the sc300/400 forums.. theres a guy that put it on his sc300 and gained some power on the dyno.. im wondering how much we can gain if that is installed in our cars.

 

I've been considering cutouts on my LS and possibly my SC. How expensive are they?

 

Are you planning to do 1 cutout or 2?

 

i am doing a custom exhaust on my wifes sc430 . using a custom twin loop exhaust set up to see what happens. i did a sc430 with the exhaust cutout but it was so so to me

 

i gotta look under the car to see what kind of spacing there is.. then i will decide..

 

i think the SC is great with just straight pipes. Resonator and muffler deletes will give it a deep growl.

 

i want it to sound factory sometimes too.. when im driving in my neighborhood like at 3 am.. wanna be quiet.. haha..

 

JeffTsai did it on his white GS...at one point he had the full stock exhaust behind the cutouts lol. He made something like 340rwhp with the cutouts closed going through the stock exhaust, as soon as he opened the cutouts he made like 450rwhp. That obviously was a long time ago when he was on low boost.

 

Anything new on this?

I will get the PPE headers installed next year and want a performance exhaust to match. I want the increased performance for tracks days but don't want to be too noisy for daily driving. Shouldn't the cutouts allow even better performance than using a performance exhaust given that everything is eliminated after the cats?

In VA we can't delete the mufler or run a straight pipe so perhaps the cutout is the best option to support some track days and daily driving most of the time. So how about I install cutouts and keep the OEM exhaust?

Comments?

 

i havent gotten around to this.. i've been so busy... but yea, i was thinking of keeping the OEM exhaust with the cutout after the cat... keeps the car quiet when i dont want to drive fast.. haha..