How much, if any whp gains from a 4 into 1?

[Pigface1]

What's the average. . I'm specifically looking at Akropovic, but it doesn't matter.  I'm just curious about the gains from stock to 4-1.

[denise richards]

if mapped you look at a 10rwhp increase and very smooth powerband.and the weight difference.and then go -1tooth in front and you will not recognize your bike.if you dont get it custom mapped its not worth the money imo.

[rem300ultra]

I installed the Akropovic Elvolution on my 04 LE with small air box mod and BMC race airfilter and PCIIIR. Picked up 13 RWHP on Johnnnycheese dyno with his custom map installed.

[GoldenChild]

buy bde get the hp and the customer service to boot.10-15 hp depending on varibles,fuel,air quality and the tuner.

[Johnnnycheese]

I got over 150HP gain with the 4/1 header and pipe I used

[DarkFalcon]

I got over 150HP gain with the 4/1 header and pipe I used

I'll take one to go please.

[slow1000]

I got over 150HP gain with the 4/1 header and pipe I used

and which one might that be

[rem300ultra]

Hey Johnnnycheese, hows everything been going.I want to thank you again for the dyno tuning that you did on my bike. It runs better than ever.

[denise richards]

I got over 150HP gain with the 4/1 header and pipe I used

sounds about right

[Johnnnycheese]

I got over 150HP gain with the 4/1 header and pipe I used

and which one might that be

the only that has a little spinning wheel after the collector

[Pigface1]

I'm assuming the mapping varies from bike to bike. . it's along the same lines as dyno-tuning a car?

[frisbee]

I got over 150HP gain with the 4/1 header and pipe I used

and which one might that be

the only that has a little spinning wheel after the collector

I want one too!

[BusaWizard]

Go with the Brock Davidson Gen3 package system if you can afford it. It comes with everything you need, even a pre mapped pwr.commander3R. Take a look on thier site, brockdavidson.com.

[denise richards]

ive seen from 1-2hp losses up to 15hp gain mapped.micron full system seems to be the worst of all times