Well I know that when I installed the CAI in my former Si I could hear the VTEC real loud. Last Saturday I installed the CAI on my GSR and can barely hear when the VTEC kicks in. A friend of mine hwo helped me says is nothing wrong with that. IS that true or is something wrong here?

 

I just barely installed my AEM 2 days ago and prior to the installation I could barely notice a difference when I hit VTEC. After installing the AEM CAI it was obviously louder at WOT, and when 6000 hits, it gets really loud and you know for sure that VTEC is abundant!! I don't know if it's your car or the intake, but at least on my car, 98 GS-R it is definitely noticeable and damnit, it makes me drive faster and faster!

 

Mine is a very noticable difference when I hit Vtec it yells you can hear the changeover very easy.

Maybe they stiffed you with a LS motor

 

have you checked your oil and are you up to temperature when you jump on it.. if the oil pressure isnt' high enough it won't switch over and well, cold isn't good for it...

you can here a slight difference, but everyone is right.. you wont hear much till the IAB opns up..

 

Speaking of the switch over, the switchover will happen when the oil temp is up, whether or not you are above or below the switchover point. The scariest thing that ever happened to me was on my way home from work. The 2 lane highway beside my job is extremely busy, both with tourist traffic and locals going home, so normally there some wait and when I get a chance, the oil's warmed up enough to use all of the rev range to get out. This time I got a break, except this cop is coming in the lane I'm trying to pull into and he slows to try force me to wait for this long lineup of cars. At the last possible second he goes past and I have about 5 carlengths to get into the lane so I shift at 4500 or so to avoid VTEC in first and haul on it in second to get up to highway speed. Normally there's a third shift here but the 18 wheeler behind me isn't giving me the option of being casual.
At this point, the cop decides to brake, and I'm nearly on his bumper anyways and I happen to glance down and I'm pretty well at 6000 rpm... but nothing because the oil's still cold. Suddenly the secondaries open up and I'm in full scream to the redline. I get off the throttle and slam on my brakes and just barely avoid hitting the cop ahead of me. It was like lighting a rocket booster and if I'd been a few feet closer I wouldn't have managed to react in time.
The moral of the story... let your engine warm up gradually or don't drive agressively until it does, because this almost bit me hard.

 

tru dat!

 

ouch! that would have been baaaad.... i don't think the cop would have let you off easy

 

u should be able to hear it with an AEM. if not being able to hear it was true on a gsr...why is it so fricken loud on the Si?!! My VTEC is hella loud with my CAI.(even louder now with the ITR cams )

i dont know the reason why u cant hear it. My friends hybrid does the same. u definately feel it...but really cant hear it for some reason

 

First off VTEC engagement is dependant on many variables. Oil temp, oil pressure, throttle position...etc. Second, VTEC engagement is not going to be that prominant. Yes you will be able to hear it vaguely if you are really paying attention. This is completely normal and there is nothing to worry about. There is no loud bang and it will not kick you in the back of your seat, but this does not mean its not engaging.

 

The VTEC is designed to kick in as quietly as possible in a stock GS-R. You have to remember that it is a semi-luxury car, and they try to make it quiet and smooth for all those people who don't like to have fun in their cars. I do suppose that you hear it a little bit, but to be honest, it's never noticeable enough in my GS-R that in normal fast driving that it stands out.
That's all I have....Peace out!

 

The VTEC is designed to kick in as quietly as possible in a stock GS-R. You have to remember that it is a semi-luxury car, and they try to make it quiet and smooth for all those people who don't like to have fun in their cars. I do suppose that you hear it a little bit, but to be honest, it's never noticeable enough in my GS-R that in normal fast driving that it stands out.
That's all I have....Peace out!

 

is it softer than it was before? or has it always been this way. You really shouldn't "feel" or hear it kick it drastically... this isn't the F&F and it'snot a 100 HP boost...

 

B16's (Si's) vtec defientely is louder. My only guess is that it is louder because it doesnt have a dual stage intake manifold like the gsr. It has an intake manifold simular to a type R, so I think it resonates sound more through the intake. Only a guess though. But si's defiently have a more pronounced vtec kick.

 

Acura is definitely a Luxury Division of Honda as we all know. Honestly though, how luxurious is an Integra? What features does it have that make it stand out? To me, it doesn't seem like any normal cars are loud even at higher RPMs. I just think that generally all cars are quiet at stock levels because the general public (98%) of car buyers do not want a noisy car. I just don't agree with you that it is designed to be quiet. Do this, take off your intake cover if you have a stock exhaust on a GS-R. I did it just to try it and suddenly it seems that you have an aftermarket exhaust (sounding). I'm sure this is the same with most stock intakes, but I'm just running off here and not making sense. Oops, basically I don't think they designed VTEC to be quiet, because most people that will ever hit VTEC don't care if it's quiet, I'm sure if anything they want the rush of the engine symphony. BTW, I just installed a AEM CAI and at 3K it opens up and is a deep throaty sound, but when 6K hits exactly, ENGINE NOISE IS LOUD...but in a positive way. I love it! VTEC with a AEM is definitely noticeable, NO DOUBT! (I sound like a jerk, sorry, just want to state my opinion, DAMN!)

 

Hey all,

The VTEC "honk" in the Civic Si (B16A) is very loud with a CAI I think due to the large amt of overlap dialed in. My buddy has a 99 Si and with just Iceman Drylands, his car was louder than my GSR Sedan with I/H/E and CTR intake cam!

I've found that some GSRs are a little louder than other when the secondaries open up. My car isn't that loud compared to fellow DFHer Sonic's 98 GSR with just AEM and Comptech axle back... Just differences in the manifold perhaps? Newer GSRs also have slightly more aggressive cams I think...

FB

 

i think plenty of people here that say, yeah when vtec kicks in on the GSR, its really loud...they have the missunderstanding that vtec kicks in at around 6k which is the secondary intake runners kicking in.

On my GSR w/aem cai, i think it actually gets quieter...you can tell the change in sound, but it really doesn't get louder...it just sounds like the airflow smooths out...

 

If VTEC was made quieter on the GSR, for those who don't like to drive,
then why does the GSR have a standard transmission and not an automatic?

The stick shift already keeps the riff-raff (soccer moms, old farts, assorted yuppies) away quite nicely .

 

Good point. I withdraw my earlier statement. Now I have no comment on the topic. You've all killed my point.

 

Neener Neener!! Sorry if I came across rude, but it's true, it wasn't made to be quiet.....anyways, good topic

 

Oh, it's no big deal. I didn't think you were rude or anything. I enjoy a nice friendly debate. If we could all just respectfully disagree with others here, the board would be a lot easier to get answers on. However, people seem to enjoy flaming...oh well, what can ya do?

 

When I test drove a Lude, the VTEC engagement seemed very prominient, though I believe the H22A has the same setup as the GS-R with the secondary intakes, so it could've been the secondaries opening. I did feel cheated when I finally pushed my GS-R that it didn't have the same sort of attitude adjustment the Lude seemed to have when kicking over.
I feel nothing at 4400 when the cam lobes switch, hence the reason I almost had a cop as a hood ordament. I do get a huge rush when the secondaries open.
The Civic Si I test drove didn't seem to have a noticable switch point, however I only got a chance to drive that around the block. The S-2000 seems to act like an Integra as far as engine characteristics.
Stock for stock, I think the Lude is the most impressive sounding of the bunch (biggest engine too)

 

On my GSR w/aem cai, i think it actually gets quieter...you can tell the change in sound, but it really doesn't get louder...it just sounds like the airflow smooths out...
_______

That exactly how I feel my car after I installed the AEM CAI, I also have an axle back 5 Zigen which to me is really quite. Thanks for all the replies.

 

Hey,

The Lude has the biggest VTEC "kick" of the DOHC VTEC Hondas when stock. Maybe for emissions? Part of the point of VTEC is to have NO kick. It's fun, but it probably means you could have more "area under the curve" if you changed something.

For example, one of the mods for Lude guys was to LOWER the stock VTEC point.

FB

 

Ok smart guy VTEC engagement has nothing to do with throttle position it has to do with oil pressure oil temperature coolant temp. I have a B18C5 and the VTEC is very prominent whether it crosses over at 5% throttle or 100% It is just louder at a larger throttle opening.

 

I'm going to take that as a compliment. I was only trying to help and I somehow cant help but sense hostility towards me in your post. Although I do not think I was wrong I dont think you should waste bandwidth with a post targeted at a person just looking to help.

KANJI