I just hit 100,100 miles and I plan to hit 250,000 within the next few years. I am considering getting a y pipe but i have reason to believe that the car would last longer the way it is now. Will the y pipe eventually cut short the life of the engine. All i have right now is an intake.

your intake prob do more harm than the y-pipe.
only prob is see if you lead footing it more w/ the y-pipe.

I doubt there is any theoretical reason that it would shorten the life of the engine. You said you have reason to believe it will hurt it, what is your reason?

In actuality it may cause you to accelerate harder than you would without it, because your car will be faster and more exciting to drive. In that way, it might shorten the life of your car.

It looks like all these guys with over 200,000 miles on their max are all stock or have just minor mods like intake.

your y pipe will only hurt the environment.. not your car..

14.46 with only y pipe and 14.87 stock. Is this correct. I thought it would have made a bigger difference than that.

Actually mods that make the engine more efficent, will actually make the car last longer. It takes less energy to get the car to the same speed(ie.. crusing).

I would say the modded parts don't always last the same as oem parts though. That's why you have to use intelligent mods.

.4 secs is a HUGE gain.. not many mods will do that..

Bigger difference than 4 mph and .4 seconds? That's a massive increase for one mod that isn't nitrous, SC, or turbo. Hah, you thought wrong. Its only like 15 hp man.

intake is more harmful to engine.............................i'd say. do what dave b has OSCAI and and y-pipe, long engine life, mid 14's in the 1320

it gave me 50 hp

Think about it...how many car lengths does a car travel at 80+mph in .4 seconds?? About 3-4 car lengths.

That's a HUGE amount of increase for just a bolt-on.

yea, bolt ons are kewl! i believe it (y-pipe)is the best thing right under NOS, SC< or turbo, and cheaper, and at 4.5k, you really feel it.

I've had my CAI and y-pipe on my max for 2 1/2 years and 60,000 miles. My max is getting ready to turn 100,000 miles and the motor still runs great. I wouldn't give it a second thought, get the y-pipe!!

someone explain why the intake will hurt in longrun-
by the way is the JWT filter element good enough?

Ditto. I'd like to hear the logic behind "intake mods are bad for your engine."

In the words of Colonel Sherman Potter, I say "Horsefeathers!"


If you use a quality intake (POP or CAI), w/ a quality filter element, I see no reason why you should expect any detrimental effect on your engine as compared to stock. In fact, it's arguable that many of the quality cone filter elements do a better job than their paper OEM airbox counterparts when it comes to keeping unwanted grit out of your engine. In that regard, you could make the case that an intake mod. could actually be BETTER for your engine than the OE airbox.

my .02 cents. Flame on, if you must.

What about the automatic transmission? Since these mods are giving gains, that means there's more power being put on the transmission causing it to push harder and faster. How much more gains can the stock automatic transmission take before it starts getting damaged from the increase of hp/torque? For those with supercharged auto 4th gens, did you guys need to upgrade the transmission? Just curious

e=Mc2: more power = more stress.

This is an absolute. Yes, horsepower mods. will put additional stress on a transmission. How much? Depends on a lot of variables...