grambles423
Automotive Engineer
To see their effects on OTHER tunes yes. But to see their physically limiting effects, no.
6
Technical Understanding: Intakes: Stock vs. Drop In vs. Aftermarket
- Thread starter grambles423
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Bender1
Banned
In that case - shouldn't all be tested on a totally stock car? Anything else brings tune specifics into play.
For example - a modshack on an APR K04 might log differently than a Carbonio because the APR K04 programming is EXPECTING specific flow characteristics from a part it was specifically developed with?
In my head I see a flaw in the test, but I am not sure if it is a real flaw or just in my head.
Maybe the solution is to remove boost from the equation.
For example - a modshack on an APR K04 might log differently than a Carbonio because the APR K04 programming is EXPECTING specific flow characteristics from a part it was specifically developed with?
In my head I see a flaw in the test, but I am not sure if it is a real flaw or just in my head.
Maybe the solution is to remove boost from the equation.
McQueen77
Banned
many people do not like the blow off noise of the carbonio. noise tolerance is 100% subjective. the blowoff was loud on my car and literally turned heads on the street, including cops. that is not what i am looking for. i felt that the sound riced out the GTI, also not what i am looking for. under heavy throttle, upshiting etc. or heavy throttle with abrupt let-off, the blowoff got annoying to me.
the few added HP, less restriction up high and better flow was nice but didn't negate the noise, for me. i also didn't notice gains or the feel of less restriction until higher in the rev range and much of my driving is done around town where low end tq is king. i have been back on the stock airbox with aFe pro dry drop in filter sans baffle and I honestly don't miss anything about the Carbonio and its superior performance except a tiny bit on the highway. Carbonio is a highway machine, but around town, Ill take the stock box and its restrictions.
and btw, throwing in the 8" sub comparison as if it somehow relates is silly. the stock premium 8 stereo in the GTI literally has NO bass. none. my wife's 2003 pontiac vibe has a better stereo. all the added sub does is add a little low end. can't even hear it outside the car unless im cranking it. not like im cruising around with my booming bass.
grambles423
Automotive Engineer
Boost is exactly what we need to look at though.
For a full proof system, yes, testing under completely stock conditions would be better, however, you're not testing the true bounds of the intake under loads that most would see with a Stage 1 or Stage 2 tune.
At least for most tests, keeping an variable static kind of shows you the varying degrees of what the other variating subjects are doing. In this case, you're limited by intake, engine, etc. etc. Yes, you might see more discrepancy across the various tuners, but all are still limited as to what they can push through the engine. I have a feeling though, downpipe would play into this as well.
For intake purposes K04 on one specific tune would be enough to see what they can all do physically. But considering alternate MAF locations, fuel trims might differ a little tune by tune.
Who knows. Theres a lot to consider.
I'll be posting up a before and after dyno once I get my APR/Carbonio Intake installed.
Mike
P
plac
Guest
I'll add logs for my stubby apexi soon. It will be quite a unique test as the shortest intake tested yet. Even shorter than the Modshack.
A_Bowers
Moderator
Dyno sheets are not all accurate. Some miscalculate power, some over calculate power. And then you have to add in heat soak, and a ton more variables on the dyno.
The logs, while they do not provide power numbers, allow us to see how much air is moving and where along with changes in temps from intakes. Among many other factors that a dyno cannot measure.
Sent from my iPad using Tapatalk HD
Incorrect. If you use a single vehicle for all runs or logs that vehicle with that specific tune funtions as a CONTROL. You will still have a small sample size as obviously n=1.
I would not say test an AWE CCBI intake with a GIAC tune against a Carbonio with an APR tune. But you could definately test both intakes on the same car with the same tune. I would recommend though only comparing Intakes such as Carbonio and Neuspeed that keep the MAF in the stock location using an APR tune.
I picked up a Carbonio today at PureMS. Looks like I made a good choice.
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Arin@APR
GOLFMK7 Official Sponsor
There's no scientific data to support that at all, and it simply does not make any sense.
McQueen77
Banned
you are going from stock to APR tune + carbonio, or you already have the tune and are getting the intake? dyno with tune and intake doesn't say much unless its dyno with stage 1 and stock airbox vs. stage 1 w/carbonio. i'm in to see logs.
Arin@APR
GOLFMK7 Official Sponsor
McQueen77
Banned
Here's one:
cool, so the dotted line is stock w/stock air and the solid line is w/carbonio? if so, i see no benefits until around 4000 RPMs at which point the carbonio is superior. the stock airbox actually seems better up to about 3500 or so.. looks like the intake totally destroys the stock airbox around 5000RPM and beyond, but since i rarely shift any higher than 4500 RPMs, looks like I'm not missing much. there being a 30HP deficit at redline doesn't mean a whole lot to me in 95% of my daily driving.
Arin@APR
GOLFMK7 Official Sponsor
This is on the dyno. On the road you have far more air rushing through the intake the faster you go. Id expect to see gains at all RPMs.