TheOzzfather

With a CAI about 10HP

A Y pipe about 10 - 20HP
And a Cat back 10 - 15HP??

Total HP between 30 and 40 or so HP increase?

Is this acurate??

Max2000

not really..
a cold air intake get you around 6 hp
Ypipe is about 15 hp
exhaust is about another 5 hp..
so not even 30 hp...

BigDogJonx

iTrader: (7)

I will say tops 20-25whp. Im leaning toward the 20 side. I take this from my Dyno.

RBa

iTrader: (2)

Just b/c an intake is suppose to give you 10hp (hypotheically speaking ofcourse!) Y-pipe is suppose to give you 20HPs and catback is suppose to give you 10hp doesn't necessarily mean you'll gain 40HPs. Mods & horsepower doesn't add up like that..
From all that, you'll probably gain 5-10HPs at most..

What ever you read in advertisements is just a gimic to boost sales..
And to put it anotherway, your car wont be any faster over stock with just those mods..

Come on now. If HP really added up for ever mod, we'd all be in the low 13s..
It's time to start thinking in terms of physics..

Blu

iTrader: (63)

If you only got 5-10 whp from i/e/y something is wrong with your car or dyno...

Ironlord

figure a CAI gives 8 hp at crank, then a ypipe gives 15 at the crank, and a catback gives about 5 at the crank. this adds up to 28 horses, bringing a 2k1 from 222hp to 250 crank hp. but this isn't wheel hp. factor in drivetrain loss as 20% (average). then your CAI gives 6, your yipie gives 12, and your exhaust gives 4, bringing you up 22 hp. figure a stock whp of 180 and now you have 202 hp. or an increase of about 12%.

sorry, i just got out of class and i'm in a numbers mood.

95emeraldgxe

the exhaust mods will get you a good 20 HP at the wheels.....not at the crank

Jeff92se

iTrader: (82)

WTF? lol

Some people need to get off the Rice Match 101

maxman00

iTrader: (1)

I can understand that you are trying to make people think more realistically, but 5-10 HP for all those mods is a gross understatement.

I realize that you can't speak in general terms because everyones application is different, but for all those mods it is realistic to expect 20-25 whp. there are numerous dynos that prove it.

Blu

iTrader: (63)

mkoebra95

Hey-

It's been a while since I have posted. Like others are saying, manufactures's claims of power increases can't be summed up for a few reasons:

1. The power increase boasted may not be at peak. Say an exhaust system from the manifolds back claims 20hp. At peak it may be 10hp, but at 6600rpm it could be worth 20hp. If another mod gives its hp at 2000rpm, you can see why they can't be added. Your area under the curve is larger, which should be the goal anyway.

2. The manufacturers may not be giving you the whole story. Their CAI may have gained 10hp on a SUPERCHARGED car, but a lightly modded n/a Max may only get 3hp at the wheels.

3. In order for a mod to do anything the part it is replacing has to be a restriction. This one kind of goes hand in hand with #2, but you stock catback likely isn't a restriction until you up the engine's output considerably. Thus, you will not get much of a bump from swapping to a high flow muffler setup.

4. To put it bluntly, some manufacturers are full of $hyte. Kinda like #2, they advertise increases that the average Max (or any car owner) couldn't possibly acheive.

5. There are a lot of things that go into Nissan's part selection decisions. They, like most car companies, will not leave 10hp on the table if it can be done safely, not affect gas mileage and NVH, or the biggie, emmissions.

So, I like what Jeff92SE & RBa said. I don't know much about specifics for the Max, but I'd say about 15hp at peak with a nice increase across the board.

Another way to look at doing those mods, even if they don't give a lot of power, it is a good chance to work on your car. Turning wrenches is fun and will teach you more about how your car works than just about anything.