No power increase.!

Chan Chee Hoe

Hi friends,just fitted H.K.S. Hi power cat back exhaust + K&N dropped in filters,no power increase is noted,anybody knows why.???

ChrisSlicks

By the butt dyno? What were you expecting, warp speed?

You can expect 15-20hp betwen 6k-7k rpm, not sure if you would feel it.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

fullmonty

This a legit dyno or on your butt dyno?

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1974Z

i be leave he means is it that you don't FEEL a power difference = butt dyno. or was it put in a dyno to check your whp ?

Chan Chee Hoe

Yes,don't feel any better power,only noisier.

Jordo!

Always get a baseline dyno before modding to evaluate the effect... if you dyno now you can at least try and compare to someone else with a stock Z in your area using the same type of dyno.

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Enjoy it. Destroy it.

370zdub

Is the unicorn blood injection system in the on position?

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2010 Ford 6.4L Power Stroke Diesel: 588whp/1082wtrq
2007 Dodge 6.7L Cummins Diesel: 788whp/1405wtrq, runs 12's @ 7400lbs, Still miss my 370z!

Chan Chee Hoe

Well,in Singapore,you need to pay to use the dyno,anyway,here we don't need high speed,we just need better torque....also quite happy with the sound it produced,but still not as nice as an BMW in line 6 with stock exhausts.

NYBladeZ

^^I beg to differ. First off you will almost get no real "power increase" from K&N drop in filters. The reason why you would want a set of K&N filters is 1)they supposedly flow better 2)they are reusable just don't over oil them. I know they state that there is a 5hp increase but that's just marketing. You will probably get a 5-10whp increase from the exhaust but that to would not be noticeable.

We pay to get on the dynos in the states too friend, quality places probably charge $100 for 3 pulls. However, if you want to quantify your results you must pay to play. I've learned the hard way that you can't shortchange installs and you need a tune to maximize results. Complaining otherwise that you don't feel the results is fool hardy.

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2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold
2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

BalanBro

Butt dynos usually read high. Wierd...

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2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z

370Zsteve

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

Zsteve

Arent butt dynos measuered in inches?

Is that exhaust more of a straight thru or does it have alot of bends especially by or in the mufflers?

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2010 LS3 C6 Silver coupe corvette

Jordo!

Fair enough. You don't really need a dyno if you can measure speed over time.

Find a deserted road or go to the dragstrip and compare the average of your best 3-5 runs with that of a stock Z. Ideally, you'd be the one driving both...

Or, do this just for yourself before and after each mod. Whether or not you feel faster, if you are faster then you've picked up some power (well, assuming all other factors are about equal).

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Enjoy it. Destroy it.

wilsonp

There's a nice dyno chart here showing a good increase from the drop-ins at all revs on the 370Z. Mine may feel a little peppier but I'm still getting used to it, so I can't be sure.

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Chan Chee Hoe

Just came back from a drive,idling speed seems like 100 rpm more[650rpm] in "D",fuel comsumption also a bit higher,now 7km/L,last time 7.2km/L.