Vishnu's take on Intakes
#1
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Vishnu's take on Intakes
Very interested in Vishnu ECU reflash! Talked to them on 12/27 and was told all mods OK, except after-market intakes [cold or otherwise]. Offered to drive to P-Town and be dynoed. Told: "All intakes do more harm than good, no intakes period'. I have one mod,{beside Greddy exhaust}, and, as luck would have it, it's an AEM cool air intake. Very happy with it! Cool,dense air, laminar flow, 7HP vs. stock thru powerband; what's not to like? Why the caveat on intakes? Intuition screams; "Lack of empirical data with assorted after-market intakes vs. other mods{up-pipes, down-pipes, exhausts.etc.} Is this the case, or are there real, valid detractions re: intakes? Shiv. would welcome your input. any anyone else's? Respect Vishnu, and really hope this is'nt bourne out of economic expedience. Respectively submitted, Collins
#2
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Not trying to be a punk or anything but didnt they already answer your question in this thread?
https://www.i-club.com/forums/showth...&threadid=4202
https://www.i-club.com/forums/showth...&threadid=4202
#3
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Vishnu intakes
scoobiesnacks, I did get one opinion two days ago on a prior thread I posted. As to answering the question, no, it really didn't. Would really like to get a cogent explanation from Vishnu, if possible. Thanks, Collins
#4
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If intakes are so harmful, then explain why the top tuner WRXs in Japan and Australia are all using pod intakes? I agree that cold air intake is a waste, but a good pod filter like a Blitz SUS or a MRT Ram Pod is not a waste of money, and can provide some gains.
#6
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Re Intakes
Some people think Intakes look great.
Others like the noise they make -- A stock WRX grunts more and you can hear the stock BOV.
With Turbos, intakes aren't as critical for resonance charging (like non-forced induction). I have an AEM Cold air on '02 WRX and am thinking about re-installing the stock air box.
Tweaking my UTEC will out-do any power the intake can make
Others like the noise they make -- A stock WRX grunts more and you can hear the stock BOV.
With Turbos, intakes aren't as critical for resonance charging (like non-forced induction). I have an AEM Cold air on '02 WRX and am thinking about re-installing the stock air box.
Tweaking my UTEC will out-do any power the intake can make
#8
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Re: Vishnu's take on Intakes
Originally posted by Collins
Very interested in Vishnu ECU reflash! Talked to them on 12/27 and was told all mods OK, except after-market intakes [cold or otherwise]. Offered to drive to P-Town and be dynoed. Told: "All intakes do more harm than good, no intakes period'. I have one mod,{beside Greddy exhaust}, and, as luck would have it, it's an AEM cool air intake. Very happy with it! Cool,dense air, laminar flow, 7HP vs. stock thru powerband; what's not to like? Why the caveat on intakes? Intuition screams; "Lack of empirical data with assorted after-market intakes vs. other mods{up-pipes, down-pipes, exhausts.etc.} Is this the case, or are there real, valid detractions re: intakes? Shiv. would welcome your input. any anyone else's? Respect Vishnu, and really hope this is'nt bourne out of economic expedience. Respectively submitted, Collins
Very interested in Vishnu ECU reflash! Talked to them on 12/27 and was told all mods OK, except after-market intakes [cold or otherwise]. Offered to drive to P-Town and be dynoed. Told: "All intakes do more harm than good, no intakes period'. I have one mod,{beside Greddy exhaust}, and, as luck would have it, it's an AEM cool air intake. Very happy with it! Cool,dense air, laminar flow, 7HP vs. stock thru powerband; what's not to like? Why the caveat on intakes? Intuition screams; "Lack of empirical data with assorted after-market intakes vs. other mods{up-pipes, down-pipes, exhausts.etc.} Is this the case, or are there real, valid detractions re: intakes? Shiv. would welcome your input. any anyone else's? Respect Vishnu, and really hope this is'nt bourne out of economic expedience. Respectively submitted, Collins
I am going to guess that the reason Shiv is stating no intakes is because the MAF sensor housing on the intakes is not exactly the same size as the stock housing. This skews the MAF readings across the board. He also understands that an intake is not needed and will not give you any power over a stock airbox. In short, Shiv can gaurentee a better running car that is consistant while making more power with the stock box in place.
The reason intakes make power on the WRX in certain cases is because the MAF housing is larger and this tells the ECU you are flowing less air. As a result the ECU injects a bit less fuel and your AF's lean out. Since the WRX's stock ECU is very rich in the 10 to 1 or even 9 to 1 range at WOT even a small change toward the leaning out the AF makes power.
As "thebob" pointed out below. That power you gained can be had with the stock intake if you had some form of engine management to tune the car. This is what Shiv is doing with the Chip (among many other things) but alot of the power comes from a leaner optimized AF curve.
I know you like your intake and thats cool man.. Run it. But the facts are that I have run in the 11's with a stock airbox and I have run low 12's with no nitrous making 400+hp all on a stock airbox. I have run the AEM intake and made no more power and my times did not drop. I am currently listed as #2 on the 1/4 mile registry and #3 on the 1/4 mile registry for nitrous and turbo.
After hearing Nathan at Turboxs say "most of the high hp cars we tune happen to have a stock airbox" only confirms that.
Back when I ran the AEM Shiv flew out and tuned my car and told me point blank to remove it back then and that was over a year ago.
hope this explains things.
Clark
#9
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Thank you very much for this info. It all makes sense, even with my limited tuner knowledge. Really wanted to believe that intake was OK for Shiv's reflash, but hopes have now really waned. Naturally, I junked my stock intake. Never thought I'd need it again. Oh Well, guess I'll plant myself in the customer lounge of local Suby dealership, do my best imitation of an AEM rep, and bilk, I meant swap, for stock intake from new rex owner. As I mentioned before, would like to start Shiv's performance upgrade path. Again, thanks for your info. Collins
#10
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Originally posted by Collins
Thank you very much for this info. It all makes sense, even with my limited tuner knowledge. Really wanted to believe that intake was OK for Shiv's reflash, but hopes have now really waned. Naturally, I junked my stock intake. Never thought I'd need it again. Oh Well, guess I'll plant myself in the customer lounge of local Suby dealership, do my best imitation of an AEM rep, and bilk, I meant swap, for stock intake from new rex owner. As I mentioned before, would like to start Shiv's performance upgrade path. Again, thanks for your info. Collins
Thank you very much for this info. It all makes sense, even with my limited tuner knowledge. Really wanted to believe that intake was OK for Shiv's reflash, but hopes have now really waned. Naturally, I junked my stock intake. Never thought I'd need it again. Oh Well, guess I'll plant myself in the customer lounge of local Suby dealership, do my best imitation of an AEM rep, and bilk, I meant swap, for stock intake from new rex owner. As I mentioned before, would like to start Shiv's performance upgrade path. Again, thanks for your info. Collins
Clark
#11
Collins,
I did the same thing you did back in December. Really wanted to keep my AEM but finally relented and put the stock back on. I have a lightly modded car - uppipe, dp, catback and after the ECUTek reflash, produced 212 at the wheels. I don't miss the AEM at all - except for the sound of the stock BOV under WOT. The smooth power has more than made up for it.
I did the same thing you did back in December. Really wanted to keep my AEM but finally relented and put the stock back on. I have a lightly modded car - uppipe, dp, catback and after the ECUTek reflash, produced 212 at the wheels. I don't miss the AEM at all - except for the sound of the stock BOV under WOT. The smooth power has more than made up for it.
#12
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I currently run the AEM CAI, and I've toyed with the idea of putting the stock airbox back in. One question, though. Does replacing the stock airbox also mean replacing the snorklepuss? I still have both of them in the cubby of my parking stall, just curious.
#14
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Originally posted by EtchyLives
Does replacing the stock airbox also mean replacing the snorklepuss?
Does replacing the stock airbox also mean replacing the snorklepuss?
I think that the pros outweigh the cons of stock airbox sans snorkus vs. CAI.
I did write an email to Shiv asking what all the fuss was about aftermarket intakes and CAI's, but as of yet, no reply.
Pat
#15
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If intakes were truly so detramental, then why in the heck to like all high HP cars in the world run them?
I suspect that Shiv MAY (Read *MAY*) denounce them because they do not have a Vishnu label on them.
I suspect that Shiv MAY (Read *MAY*) denounce them because they do not have a Vishnu label on them.