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indeskater · 07-22-2003, 01:04 AM

i bought a 95 Gsr two weeks ago. i have installed a cold air intake, exaust, and a vtec light. The vtec light illuminates at about 4900 rpm at full throttle, where a very subtle sound difference occures, also a little bit harder pull. Then at 6000 rpm the vtec picks up again, with a reduculous sound difference, and a lot harder pull. My friend put a vtec light just like mine in his 2000 civic si. When his light illuminates it has the hard pull and more intense, abrubt sound difference at 5000 rpm, as mine has at 6000 rpm, but the civic never has a second powerban, the civic just holds the "new tone" until redline.

My Qustion:
Should my vtec be at full force when it first kicks on?
Is my vtec just not comeing on until 6000 rpm?
Does the Gsr vtec work exactly like the Civic Si?
Thanks for your help.

E_SolSi · 07-22-2003, 01:09 AM

the slight sound difference you hear is the secondary intake runners opening up

12secondCRX · 07-22-2003, 01:45 AM

The light is coming on when vtec starts but it's not engage in either car till between 5600-5800rpm if stock ECU. (As far as I know but might be wrong)

E_SolSi · 07-22-2003, 01:51 AM

hondas do not have "levels" of VTEC its either on or its off

12secondCRX · 07-22-2003, 01:57 AM

Okay but doesn't vtec engage around 5600-5800 stock normally then?

E_SolSi · 07-22-2003, 01:59 AM

its different on each type of VTEC engine ... not sure on the stock points

Dman1100 · 07-23-2003, 02:32 PM

some do have levels only, a couple though

hcivic.com · 07-23-2003, 02:38 PM

no they dont!
And Dont try to say i-vtec doea because it dosn't

i-VTEC

In addition to controlling lift and duration, like other VTEC systems, the "intelligent" i-VTEC™system uses Variable Timing Control (VTC) to adjust "camshaft phasing." By varying oil pressure, VTC can continuously vary intake timing relative to the engine's exhaust timing. The result of i-VTEC is improved response and enhanced performance at low engine speeds and efficiency across a broad power band.

Dman1100 · 07-23-2003, 02:50 PM

it's called 3-stage vtec. its in an itr(i think) and some older economy motor

SixtySecondAssassin · 07-23-2003, 02:52 PM

i thought the vtec-e and the s2000 was 3 stage

Dman1100 · 07-23-2003, 02:55 PM

Damn it i fucked up you're right it's the s2k

SixtySecondAssassin · 07-23-2003, 02:55 PM

http://asia.vtec.net/article/EK3/index.html

h82w8 · 07-23-2003, 02:58 PM

If I am not mistaken, the three stage VTEC is a VTEC engine with a second VTEC that is activated when the vehicle gets to highway speed. instead of the change resulting in another powerband it switches to super economy mode.

Dman1100 · 07-23-2003, 05:27 PM

could be i haven't read much about it i just know of it. but thinking of s2k's on the highway, i saw one with a flapping wing in tennessee a week or so ago and it flew past us and then about a half hour later we saw a cop fly by with his lights on and then like an hour later we saw the cop on the shoulder and the s2k in the trees. sucks for that guy

GSRCRXsi · 07-23-2003, 05:36 PM

the gsr engine (if stock) hits vtec at about 4400 rpm, but the secondaries are still closed, and at about 5800 rpm the secondaries open up

JDMilan · 07-23-2003, 07:55 PM

your correct ^ about the GSR with crossover in the 4's and the butterflies opening in the 5's.

Milan

rudeludenotmeanthough · 07-23-2003, 08:52 PM

does someone have a 'how stuff works' about this???... im a little lost

JDMilan · 07-24-2003, 12:13 AM

Not sure if this helps but in the oem GSR the vtec crossover is at 4400rpm so that is when vtec engages. Now at 5800rpm there are secondary butterflies (kind of like small extra tb's) that open up within the GSR intake manifold, that is why the manifold looks unique.

Milan

07-22-2003, 01:45 AM	#3
12secondCRX Senior Member Join Date: May 2003 Posts: 347 iTrader: 0 / 0% Rep Power: 17	The light is coming on when vtec starts but it's not engage in either car till between 5600-5800rpm if stock ECU. (As far as I know but might be wrong) __________________ <span style=\'color:red\'>'90 Crx 12.6 @109.29 <-Sold '01 Gsr 15.2 more show then go <-Sold</span> <span style=\'color:blue\'>Forced to go SLOW because my Xb has no GO!!!</span>

07-22-2003, 01:57 AM	#5
12secondCRX Senior Member Join Date: May 2003 Posts: 347 iTrader: 0 / 0% Rep Power: 17	Okay but doesn't vtec engage around 5600-5800 stock normally then? __________________ <span style=\'color:red\'>'90 Crx 12.6 @109.29 <-Sold '01 Gsr 15.2 more show then go <-Sold</span> <span style=\'color:blue\'>Forced to go SLOW because my Xb has no GO!!!</span>

07-23-2003, 02:32 PM	#7
Dman1100 Senior Member Join Date: Jan 2003 Location: Des Moines IA Posts: 374 iTrader: 0 / 0% Rep Power: 17	some do have levels only, a couple though __________________ Get Xbox 360 Games and Accessories for free.

07-23-2003, 02:50 PM	#9
Dman1100 Senior Member Join Date: Jan 2003 Location: Des Moines IA Posts: 374 iTrader: 0 / 0% Rep Power: 17	it's called 3-stage vtec. its in an itr(i think) and some older economy motor __________________ Get Xbox 360 Games and Accessories for free.

07-23-2003, 02:52 PM	#10
SixtySecondAssassin Senior Member Join Date: Sep 2002 Location: Austin, TX Posts: 1,071 iTrader: 0 / 0% Rep Power: 25	i thought the vtec-e and the s2000 was 3 stage __________________ .....deagle.....


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07-22-2003, 01:04 AM	#1
indeskater Member Join Date: Jul 2003 Posts: 35 iTrader: 0 / 0% Rep Power: 13	i bought a 95 Gsr two weeks ago. i have installed a cold air intake, exaust, and a vtec light. The vtec light illuminates at about 4900 rpm at full throttle, where a very subtle sound difference occures, also a little bit harder pull. Then at 6000 rpm the vtec picks up again, with a reduculous sound difference, and a lot harder pull. My friend put a vtec light just like mine in his 2000 civic si. When his light illuminates it has the hard pull and more intense, abrubt sound difference at 5000 rpm, as mine has at 6000 rpm, but the civic never has a second powerban, the civic just holds the "new tone" until redline. My Qustion: Should my vtec be at full force when it first kicks on? Is my vtec just not comeing on until 6000 rpm? Does the Gsr vtec work exactly like the Civic Si? Thanks for your help.

07-23-2003, 02:38 PM	#8
hcivic.com Senior Member Join Date: Jan 2003 Location: Calgary Alberta canada Posts: 4,577 iTrader: 0 / 0% Rep Power: 59	no they dont! And Dont try to say i-vtec doea because it dosn't i-VTEC In addition to controlling lift and duration, like other VTEC systems, the "intelligent" i-VTEC™system uses Variable Timing Control (VTC) to adjust "camshaft phasing." By varying oil pressure, VTC can continuously vary intake timing relative to the engine's exhaust timing. The result of i-VTEC is improved response and enhanced performance at low engine speeds and efficiency across a broad power band.

07-23-2003, 02:55 PM	#11
Dman1100 Senior Member Join Date: Jan 2003 Location: Des Moines IA Posts: 374 iTrader: 0 / 0% Rep Power: 17	Damn it i fucked up you're right it's the s2k __________________ Get Xbox 360 Games and Accessories for free.

07-23-2003, 02:58 PM	#13
h82w8 Senior Member Join Date: Dec 2002 Location: orlando,florida Posts: 334 iTrader: 0 / 0% Rep Power: 18	If I am not mistaken, the three stage VTEC is a VTEC engine with a second VTEC that is activated when the vehicle gets to highway speed. instead of the change resulting in another powerband it switches to super economy mode. __________________ 1990 white crx dx immaculate shell... waiting 1995 black del sol VTEC,jdm B16A, black 15" rota slips, BFG g-force ta kdw's, kyb agx's, eibach pro-kit, tanabe strut bars, tanabe hyper medallion, dc header in 1962 honda launched their famous ad campaign: "you always meet the nicest people on hondas" ...chirp <span style=\"color:#3333FF\">WTB</span> gsr head , ls block, or b20 block.

07-23-2003, 05:27 PM	#14
Dman1100 Senior Member Join Date: Jan 2003 Location: Des Moines IA Posts: 374 iTrader: 0 / 0% Rep Power: 17	could be i haven't read much about it i just know of it. but thinking of s2k's on the highway, i saw one with a flapping wing in tennessee a week or so ago and it flew past us and then about a half hour later we saw a cop fly by with his lights on and then like an hour later we saw the cop on the shoulder and the s2k in the trees. sucks for that guy __________________ Get Xbox 360 Games and Accessories for free.

07-23-2003, 07:55 PM	#16
JDMilan Senior Member Join Date: May 2003 Location: Boca Raton, FL Posts: 6,733 iTrader: 0 / 0% Rep Power: 81	your correct ^ about the GSR with crossover in the 4's and the butterflies opening in the 5's. Milan __________________ <span style=\"color:red\">"92 Blue EG"</span> -Project 3 - Motor A (NA stock SiR longblock B16 EG/S1tran) 14.3@97 15" radial tires & Gutted -Project 3 - Motor B (NA stock SiRII longblock B16 EG/S4tran) 13.3@103 MT's & Gutted <span style=\"color:red\">"Goldy S13"</span> -Project 4 - Motor A (FI SR20DET w/T28 "Under Construction&quot <span style=\"color:red\">"Silver E46"</span> -Project 5 - Motor A (???)

07-23-2003, 08:52 PM	#17
rudeludenotmeanthough Senior Member Join Date: Sep 2002 Posts: 1,406 iTrader: 0 / 0% Rep Power: 29	does someone have a 'how stuff works' about this???... im a little lost __________________ </div><table border=\'0\' align=\'center\' width=\'95%\' cellpadding=\'3\' cellspacing=\'1\'><tr><td>QUOTE (94RedSiGal @ Dec 2 2003 @ 12:27 AM)</td></tr><tr><td id=\'QUOTE\'>Having a ClubSi, Honda-Tech or HondaSwap sticker on them would just scream "Steal Me Now! I'm a special car!" to thieves.</td></tr></table><div class=\'signature\'>

07-24-2003, 12:13 AM	#18
JDMilan Senior Member Join Date: May 2003 Location: Boca Raton, FL Posts: 6,733 iTrader: 0 / 0% Rep Power: 81	Not sure if this helps but in the oem GSR the vtec crossover is at 4400rpm so that is when vtec engages. Now at 5800rpm there are secondary butterflies (kind of like small extra tb's) that open up within the GSR intake manifold, that is why the manifold looks unique. Milan __________________ <span style=\"color:red\">"92 Blue EG"</span> -Project 3 - Motor A (NA stock SiR longblock B16 EG/S1tran) 14.3@97 15" radial tires & Gutted -Project 3 - Motor B (NA stock SiRII longblock B16 EG/S4tran) 13.3@103 MT's & Gutted <span style=\"color:red\">"Goldy S13"</span> -Project 4 - Motor A (FI SR20DET w/T28 "Under Construction&quot <span style=\"color:red\">"Silver E46"</span> -Project 5 - Motor A (???)

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vtec...two power bans?