When does your Vtec engage in(h22a) and what ecu?

[Tenji]

Well, my kicks in at 5900, I can only heard it, but I can't feel it, the motor is stock with a chipped p28, dc sport header, aem V2 short ram intake, and a stock exhaust so I can clearly hear it. I just can't feel it engage or if it's pulling any harder like my brother's 98 prelude sh. His SH kicks in at 5200 and it pull fast while my takes forever to hit 5900 and after that it doesn't really feel any faster. Downshifting into 3rd gear at 70mph, my rpm is only at 5000 rpm, which will take a while to hit vtec, by then anyone who's racing me will be gone, like my cousin's 92 ls/vtec integra, his engage at 4500 and pulls hard at 5500. I don't even wanna find out if I'll keep up or lose bad. I drove his and my and his vtec does pulls hard. My bro prelude aready lost to him by 1 and a half car(highway). Any recommendation, advice to this, should I get a different ecu for lower vtec engagement, any downside to having vtec kicking in late, or early. I did some searching, really didn't help. While I have a 94 accord now, I'm still loyal to the cb7. I really don't know where to ask beside this forum.

["sleepin"]

i dont have an sh in my car but its a usdm h22a4 (01 model in a 4th gen sedan) and i dont really consider a "kick" when vtech crosses over more like my car "gets lighter" when it engauges and that happens at 5700 rpms. This is with a spoon chip on a p13 with intake and exhaust. what you need is tuning, cause if you're punch it and no go, there something wrong, not stating you gonna run 12's on that set up but enough to notice the difference. or maybe a better driver, lol, j/k

[TheTempest]

your engage point is set by the programming in the EPROM on your chipped P28. So, it depends on where it's set at. I have a chipped P28 and it engages at 5200 like stock, but that's because the map I'm using is set to 5200. I have another map, for example, that has it set at 4800.

Anyways, you're not suposed to "feel" VTEC. I can't feel VTEC in mine, at least the crossover point, but I hear the difference and my car has better topend.

[92acclude]

vtech = a phone
vtec = the thing in your honda

Mine rolls in around 5500rpm, there is never a noticable kick, just an increase in noise and speed.

[Tenji]

Well I just found out that the car have the stock 94 accord ex f22 tranny with an aftermarket lsd bolted on the h22a. Should, I get an h22 tranny, also which tranny, would a usdm be okay, if so which one.?

M2A4 – JDM H22A tranny non-LSD.
M2F4 - USDM H22A1 tranny.
M2YA – USDM H22A4 tranny.

[DrLove'sKuDang]

mine is 5200 as well, supposedly stock. people always argue about stock points, 5200, 5400, etc.

btw, i can feel vtec engage, not always a bad thing

[f22-dohc]

mine doesnt

oh nvm i dont have vtec

[ssaccord92]

well my vtec kicks in really hard but mainly b/c of vafc and it halls as pulls like a mofo 2 7500rpm

and also the stock tranny vs the h22 tranny is a really big difference

the fseries trannies are good for turbo

if allmotor go with h22 b/c gearing is really shorter

all the gear ratios u need right here

1990-1993 Honda Accord DX/LX/EX coupe/sedan manual F22A1/6 P2U5 - USDM
1990-1993 Honda Accord DX/LX/EX coupe/sedan/wagon automatic F22A1/6 MPXA - USDM
1990-1993 Honda Accord DX/LX/EX sedan automatic F22A1/6 APX4 - USDM Made in Japan
1994-1997 Honda Accord DX/LX coupe/sedan manual F22B2 P2A5 3.307 1.809 1.185 0.903 0.685 - 3.000 4.062 USDM
1994-1997 Honda Accord EX coupe/sedan manual F22B1 P2U5 3.307 1.809 1.185 0.933 0.685 - 3.000 4.062 USDM
1994-1997 Honda Accord LX/EX wagon manual F22B1/2 P2A4 3.307 1.809 1.185 0.903 0.685 - 3.000 4.266 USDM
1994-1997 Honda Accord DX/LX/EX sedan automatic F22B1/2 MP0A 2.736 1.483 1.026 0.674 - - 2.047 4.133 USDM Made in Japan
1994-1997 Honda Accord DX/LX/EX coupe/sedan automatic F22B1/2 A0YA 2.736 1.483 1.026 0.674 - - 2.047 4.133 USDM
1994-1997 Honda Accord DX/LX/EX wagon automatic F22B1/2 A0YA 2.736 1.483 1.026 0.674 - - 2.047 4.285 USDM
1998-2001 Honda Accord Euro-R sedan manual H22A7 T2W4 3.285 2.090 1.481 1.071 0.812 - 4.266 JDM
1998-2001 Honda Accord Type-R sedan manual H22 U2Q7 3.285 2.090 1.481 1.071 0.870 - 4.266 EDM
1992-1996 Honda Prelude coupe manual H22A M2B4 3.307 1.950 1.360 1.034 0.787 - 4.266 JDM LSD
1992-1996 Honda Prelude coupe manual H22A1 M2F4 3.307 1.950 1.360 1.071 0.870 - 4.266 USDM
1992-1996 Honda Prelude coupe manual H22A M2A4 3.307 1.950 1.160 1.034 0.787 - 4.266 JDM
1992-1996 Honda Prelude Si coupe manual H23A1 M2S4 3.307 1.857 1.320 1.034 0.812 - 4.266 USDM
1992-1996 Honda Prelude Si coupe manual F22B M2J5 3.307 1.810 1.269 0.966 0.787 - 4.062 JDM
1992-1996 Honda Prelude S coupe manual F22A1 M2L5 3.307 1.810 1.230 0.903 0.705 - 4.062 USDM
1997-2001 Honda Prelude Base coupe manual H22A4 M2Y4 3.285 1.956 1.344 1.034 0.812 - 4.266 USDM
1997-2001 Honda Prelude SH coupe manual H22A4 M2U4 3.285 1.956 1.344 1.034 0.812 - 4.266 USDM
2003-2004 Acura TSX All sedan manual K24A2 3.267 1.880 1.355 1.028 0.825 0.659 3.583 4.760 USDM
2003-2004 Acura TSX All sedan automatic K24A2 2.652 1.517 1.082 0.773 0.566 - 2.000 4.440 USDM
2003-2004 Honda Element LX/EX suv manual K24A3 3.530 2.040 1.355 1.028 0.825 - 3.583 4.770 USDM 4WD
2003-2004 Honda Civic Si hatchback manual K20A3 3.062 1.769 1.212 0.921 0.738 - 3.583 4.764 USDM
2003-2004 Acura RSX Base coupe manual K20A3 3.267 1.880 1.212 0.921 0.738 - 3.583 4.389 USDM
2003-2004 Acura RSX Base coupe automatic K20A3 2.684 1.500 0.984 0.733 0.571 - 2.000 4.562 USDM
2003-2004 Acura RSX Type-S coupe manual K20A2 3.267 2.130 1.517 1.147 0.921 0.738 3.583 4.389 USDM
2003-2004 Honda Integra Type-R coupe manual K20A 3.267 2.130 1.517 1.210 0.970 0.780 3.583 4.764 JDM LSD

[h22sparkle]

another useless thread

[Tenji]

Well, here's my tranny, the P2U5
1994-1997 Honda Accord coupe manual F22B1 P2U5 3.307 1.809 1.185 0.933 0.685 - 3.000 4.062 USDM

I like to know which one is best below. The jdm m2b4 and m2a4 seems to have different ratio in 3rd gear(which one would be better for highway racing between those 2 and the rest)

1992-1996 Honda Prelude coupe manual H22A M2B4 3.307 1.950 1.360 1.034 0.787 - 4.266 JDM LSD

1997-2001 Honda Prelude base manual H22A4 M2Y4 3.285 1.956 1.344 1.034 0.812 - 4.266 USDM

1992-1996 Honda Prelude coupe manual H22A M2A4 3.307 1.950 1.160 1.034 0.787 - 4.266 JDM

1992-1996 Honda Prelude coupe manual H22A1 M2F4 3.307 1.950 1.360 1.071 0.870 - 4.266 USDM

How do I go about getting my ecu chipped with lower vtec engage(at 5000 prefer)??

[flight50]

stock auto jdm h22a on with p13 ecu. vtec hits at 5200 like suppose to.

[blazen_accord]

Not only do I feel and see my vtec kick in , any car next to me can feel it too. My darn back motor mount is bad so the engine move a bit, when vtec engage the whole car shake, now who rather feel their vtec then to see a lil red light that blink i am getting the mount replace, afterone thought my auto was a manual since the car jerk with everyshift.

Back to ops question, you have to find someone on this forum who has a chip burner to burn another program for you. unless u dyno tune with right type of mods you will lose power if you lower vtec engage point too low. some people make more power when vtec hit at 4600-4800rpm but then again they have full head jobs p/p and race cam and camgear.

[koolkoreanked]

Like said above just get the chip reburnt or another chip for it instead. On my motor the crossover starts at 5200 rpms like stock and I dont feel the crossover. The only time I do kinda feel a kick is if I do a second or third gear pull from low rpms.

[Ecto_1]

4500- non chipped p72, butterflies 5800 and trust me you HEAR it, ask gromofsky and cisco...

[chiaboi_AcCorD]

mine doesnt

oh nvm i dont have vtec

same here but mine pulls hard when i hit 5000 RPM