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Re: Intake Questions

Posted: Mon Jul 02, 2012 1:14 am
by Daniel2019
Shane001 wrote:The only way to have any truly conclusive information on intakes is to book a day at a dyno, allocate a car that has basic modifications (extractors) and can be tuned (ie has a piggyback or full ecu), everyone brings their intakes along and each one is tuned and tested, same car, same dyno, same day. The only way to do a comparison.
Been done kinda. Akys gained I think 2kw, however that may have been with some tuning. He had a full exhaust system, but not sure if that was before or after. He will have details.

Also the boys from mighty car mods tested it on a Big Ugly sh*t box Racer. No power gains at all, except when the pod was sitting outside the car (literally in front of the car) with a fan blowing directly into it. But yeah, as you said, it hasnt really been conclusively tested.

Edit: Big ugly soap box racer to big ugly sh*t box racer. Had to be done, sorry.

Re: Intake Questions

Posted: Mon Jul 02, 2012 4:23 pm
by Shane001
Was that the youtube links that were posted? Good video but pretty poor testing process.

Firstly just sticking a different intake on and testing it without tuning it is pointless. Secondly there was no clear benchmarking done.

Re: Intake Questions

Posted: Mon Jul 02, 2012 5:21 pm
by Daniel2019
Shane001 wrote:Was that the youtube links that were posted? Good video but pretty poor testing process.

Firstly just sticking a different intake on and testing it without tuning it is pointless. Secondly there was no clear benchmarking done.
Not sure.

They used a stock filter and enclosure for a comparison figure, though.

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:07 am
by shadowarrior
Since the GPX has a MAS sensor near the throttle body, doesn't changing the intake to say a pod or something mess the sensor's readings?

Based on this info from RPW:

http://www.rpw.com.au/shop/index.php?pa ... t&Itemid=1

Certain models of the Mitsubishi range run the Mitsubishi MAS / MAF sensor which is an the electrical metering unit that goes after the air box. This unit reads how much air passes through the unit via ultrasonic waves and is a oval shaped unit. One of the major problems we see is the fitment of universal Pod Filters which then start creating problems with idle or power by running rich, stalling etc.

The reasoning behind this is the honeycombed section requires the air flow to be very straight and clean in order to be read correctly. A pod filter is cone shaped and instead, causes a swirling action which confuses the pod filter. Additionally many of the adapters fitted to the MAF / MAS sensor is square and cuts off some of honeycombed section in order to bolt on the round pod filter.

To combat this RPW has imported in from the USA specific K&N filter charger kits that are 100% compatible with the MAS sensor without causing problems. These are flat oval shaped filters with a proper cast adapter. To quote a common term : If K&N believed that a universal filter would do the job why did they make a specific filter for the Mitsubishi Air Mass Sensor.


Want to know if the above statement is true for FTO? Have seen a lot of cone pod filters in pictures here....

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:16 am
by Shane001
shadowarrior wrote:Since the GPX has a MAS sensor near the throttle body, doesn't changing the intake to say a pod or something mess the sensor's readings?
I believe that's the non mivec GR engine, definitely not the GPX.

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:22 am
by shadowarrior
Shane001 wrote:
shadowarrior wrote:Since the GPX has a MAS sensor near the throttle body, doesn't changing the intake to say a pod or something mess the sensor's readings?
I believe that's the non mivec GR engine, definitely not the GPX.
Think the non mivec has a MAF sensor while the mivec GPX has a MAS? Found this just now from one of Ben's post:

viewtopic.php?f=10&t=19044&hilit=MAF+MAS+sensor

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:25 am
by Shane001
lol sorry I read 'near the throttle body' and since you were talking about intakes this is only an issue with the GR & the MAF sensor.

The GPX does indeed have a MAS sensor (although I believe it should be correctly referred to as a MAP sensor - Manifold Atmoshperic Pressure sensor?) but it's pressure feed is off the intake plenum itself, after the throttle body.

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:25 am
by spetz
That's right only the non-MIVEC motors have air flow meters. The MIVEC motors have MAP sensors.
And if you don't have MIVEC... well why bother :D

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:28 am
by silverGPX
Could this be another intake thread??

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:31 am
by Taz
silverGPX wrote:Could this be another intake thread??
I was just thinking that :facepalm2:

Long story short - if you wanna stick a el~cheapo pod on your mivec fto, then go for it, it wont affect your sensor or hp, just make a 'cool whoosh' sound.

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:33 am
by shadowarrior
silverGPX wrote:Could this be another intake thread??
this IS another intake thread...just continuing one instead of creating another :P

Thanks spetz and Shane, so I don't have to worry about a cone pod :)

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:35 am
by PHIL069
silverGPX wrote:Could this be another intake thread??
Very popular mod = very popular topic 8)

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:39 am
by shadowarrior
Taz wrote:
silverGPX wrote:Could this be another intake thread??
I was just thinking that :facepalm2:

Long story short - if you wanna stick a el~cheapo pod on your mivec fto, then go for it, it wont affect your sensor or hp, just make a 'cool whoosh' sound.
Naah, was actually thinking the opposite. If I spend 100+ bucks on a pod K&N and then it messes up idling, or makes the car run rich, then its a 'smack yourself for spending that hundred' moment...isn't it?

I will make up the front intake mod..box..and the pipe feeding from box to TB....so why not buy the pod which I will use in the final setup instead of buying an el-cheapo now and waste that $. At least I get to hear the 'whoosh' for now and be happy till I work on the rest of the mods :)

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:41 am
by Shane001
Shane001 wrote:The GPX does indeed have a MAS sensor (although I believe it should be correctly referred to as a MAP sensor - Manifold Atmoshperic Pressure sensor?)
And in fact the manual actually refers to this simply as a 'vacuum sensor' :lol:

Re: Intake Questions

Posted: Wed Jul 04, 2012 12:44 am
by Taz
sticking a pod on by itself (especially just throwing it on, taking off the top air box cover in the process) will do quite frankly jack s**t - the stock airbox feeds more than enough air to a stock engine no problems. Unless you actually start modifying the engine and exhaust pretty heavily to the point where air flow is the bottleneck then don't waste your money. At the very least i would have to say extractors+hi flow+cat back+tune would warrant for an upgrade on the intake, and even then it would have to be done properly with a CAI to see any real difference.

Re: Intake Questions

Posted: Wed Jul 04, 2012 1:41 am
by shadowarrior
Afaik, I have a GReddy hi flow cat-back exhaust system...not running a stock one. I will eventually get hurricane extractors...
Tune comes in question after I am done with intake; else I have to re-tune it again after intake mods.

So still don't see how am I loosing if I throw a K&N pod now and eventually (within this month) change the CAI system etc. :)