Difference between Full exhaust and slip on - Kawasaki Z1000 Forum: Kawasaki Z1000 Motorcycle Forums
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post #1 of 26 Old 01-11-2012, 09:01 AM Thread Starter
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Difference between Full exhaust and slip on

Hi Guys,

Im thinking on what to get to my 2012 z1000.

Is there a big difference in HP gain between the full and the slip on ?

The price is more then double...

Thanks !!
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post #2 of 26 Old 01-11-2012, 09:07 AM
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I think so. Keep in mind I have no PCV yet. To me, and I'm sure I'll be corrected....the bike feels more powerful through out the rev range.

I have an Akrapovic 4 into 1.
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post #3 of 26 Old 01-11-2012, 10:50 AM
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at very high RPM the full system makes a FEW more HP. a PC will give you more all around seat of the pants power. the stock system is hard to beat under MAX power at less than 8,000 rpm. others will say otherwise. the full system looks good, sounds good ,takes around 25 Lbs off the bike and makes maybe 4-5 more HP only at high RPM.
let the slamming start.
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post #4 of 26 Old 01-11-2012, 11:15 AM
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"let the slamming start"
LOL
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post #5 of 26 Old 01-11-2012, 01:44 PM Thread Starter
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Notabiker - so you are saying that without a PC and driving "slow" under 8,000 RPM there wont be much difference between the stock and a slip on ?

Thanks.
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post #6 of 26 Old 01-11-2012, 02:28 PM
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my OH my!

Another exhaust postwhere's the Popcorn.to slip-on,or not to slip-on...."8000rpm's and under it's hard to beat stock system",8000 RPM and over,you go to jail,or worse...Morgue..one of the few benefits of removing the Whole stock system...bike is 20lbs lighter...and so is your Wallet...when they make a slip-on for the gen 3 Z,with an exhaust valve,I will buy it,till then...
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post #7 of 26 Old 01-11-2012, 08:59 PM
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I'm pretty sure there's a zillion of these posts. Use the search.

However.

Slip ons really don't do much for improving flow. You still retain the giant collector and cats which is the bulk of the resistance. They're there for sound only. Any performance gains to be had are minimal and you lose the use of the power valve reducing low RPM response.

Full systems get rid of all the crap, but be aware to get the best from them you'll need to re map.

As mentioned by notabiker and dr.nick, best gains are to be made from the reduced weight. With that said, a gym membership is cheaper than an exhaust...
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post #8 of 26 Old 01-11-2012, 11:10 PM
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Full exhaust= more power ,less weight.
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post #9 of 26 Old 01-12-2012, 07:57 AM
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Quote:
Originally Posted by jimroid View Post
Full exhaust= more power ,less weight.
Definitely less weight like jimroid says, but could possibly need a new fuel map to see any gains in HP.

2003 Kawasaki Z1000
-DynoJet PCIII
-K&N air filter
-Airbox Mod
-Disabled secondaries
-3/5 Exhaust Hack
-Fender elim. kit
-RaceTech 1.0 fork springs
-Factory pro +4 advancer
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post #10 of 26 Old 01-12-2012, 08:46 AM
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Quote:
Originally Posted by BennyV View Post

As mentioned by notabiker and dr.nick, best gains are to be made from the reduced weight. With that said, a gym membership is cheaper than an exhaust...


But more work!
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