Engine seems powerless until higher RPMs
 

When i floor it the RPMs raises normally but when it reaches higher RPMs you start to feel it pulling and speeding up quicker, could this mean that i have to change my air filter? cause ever since i've had my supra i havnt changed it and im going to change it really soon because i know i have to change.

thats how mine it soo. it isnt until about 3500 rpm that i feel a pull. ive changed my stock filter and recently went to a cone filter and its still the same. i think its just how its suppose to be

o, does yours sound like a muscle car at around 5,000 rpm? mine makes that kinda roar i love that sound.

yeah it does. it sounds so nice. i wish it would sound like that all the time

That "is" how the power comes on. Turbo cars kick in when the turbo spools up. N/A cars have valve in the intake manifold that changes the flow of the incoming air at about 3000rpm. To give it more torque.

ok what if you change to an aftermarket intake? will it still be the same?

i dont think that will change that much, dont forget you are only getting an intake, there wont b that much diffrence, maybe a bigger exhaust,

not jus the muffler, get a new downpipe, 2.50 straight thru, or even with the cat , maybe after that you'll feel some diffrence

It does nothing to increase intake capacity without increasing the exhaust capacity at the same time. (and visa-versa)

Also, be aware that many aftermarket intake, downpipe, and exhaust set-ups are not street legal in many states. If you care, check this before you buy and install. In California with our BS smog rules, anything good is not street legal so every 2 years when a 'smog certificate' check comes around, you would need to switch back to stock stuff to pass. If you're willing to go to this trouble...save your old stuff if needed.

(Don't expect the supplier to tell you it's not street legal...they may not offer this info, but just take your money.)

thx for the tip and i will keep my old parts