ok took the lude to the 1/8 the car is completely stock engine, only has a generic intake and an trust exhaust...the problem im looking is that when i shift from 1st to second at 7.5k im droping to around 4k and losing power without vtec..3rd gear is no problem is droping around 5.5 to 6k...is that normal on a stock prelude?? a vafc should fix that problem right?

1/8 did 10.15@72.22 with an 2.69 60' traction was an isue didnt had good tires and it rained the day before

 

VAFC is controling vtec and air it wont do u any difference about 2nd gear, it will only make ur vtec kick in earlier or later

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by russlan44 &raquo;</TD></TR><TR><TD CLASS="quote">VAFC is controling vtec and air it wont do u any difference about 2nd gear, it will only make ur vtec kick in earlier or later</TD></TR></TABLE>

i know but i could adjust the vafc so vtec engages at around 4.5k and i wouldent lose power in 2nd gear

 

Mine does the same. A heavier fly wheel will keep more rpms while shifting.

 

shift at 8?

 

how do you know putting vtec at 4500 will help? it could cause even more loss of power.

sounds like you just need to practice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HeedLessInc &raquo;</TD></TR><TR><TD CLASS="quote">shift at 8?</TD></TR></TABLE>

cant rev limit is at 7,600

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">how do you know putting vtec at 4500 will help? it could cause even more loss of power.

sounds like you just need to practice.</TD></TR></TABLE>

yea i know i need more practice...but wouldent a properly tune with the vafc help?

 

what transmission are you using?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dicorp &raquo;</TD></TR><TR><TD CLASS="quote">what transmission are you using? </TD></TR></TABLE> Yeah are you using an h22 transmission or a different tranny? When I shift around redline I still end up over 6000 rpms into the next gear.

 

sounds like a slow shift on a M2S4. On mine if i shift at 7k, second gear hits at about 4700

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aquito &raquo;</TD></TR><TR><TD CLASS="quote">

yea i know i need more practice...but wouldent a properly tune with the vafc help?</TD></TR></TABLE>

no, its just going to bandaid the problem.

shifting at 8k on the tach, you should never drop out of vtec. On my stock internal h22a, i would shift at 8k on the tach and land no less than 6k in every gear.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">

no, its just going to bandaid the problem.

shifting at 8k on the tach, you should never drop out of vtec. On my stock internal h22a, i would shift at 8k on the tach and land no less than 6k in every gear.</TD></TR></TABLE>

exactly...but isnt 8k a lil high for a stock engine?<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aquito &raquo;</TD></TR><TR><TD CLASS="quote">

yea i know i need more practice...but wouldent a properly tune with the vafc help?</TD></TR></TABLE>
maybe your low-high vtec crossover is set too high?...in that case set it to 5000 rpm or so

 

8k on the tach is the stock rev limiter. so no, its not too high. In reality its 7700, the tach is off.

and he cant manipulate vtec as he doesnt have a controller

 

If this is at the track it sounds like you just need practice launching it. im sure your car doesnt die out if your rolling at low rpm's and hit the gas and shift to 2nd. sounds like your launching it at the wrong rpm's and as soon as you hit 2nd the car dies out. seen it happen when launchin at wrong rpm's, including myself. practice

 

dont know what tranny i got...stock i guess

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97BB6Type-SH &raquo;</TD></TR><TR><TD CLASS="quote">If this is at the track it sounds like you just need practice launching it. im sure your car doesnt die out if your rolling at low rpm's and hit the gas and shift to 2nd. sounds like your launching it at the wrong rpm's and as soon as you hit 2nd the car dies out. seen it happen when launchin at wrong rpm's, including myself. practice </TD></TR></TABLE>

maybe ur right man cuz i was spinning like crazy that night cuz the track was a little like wet...i was launching at 3k on the light

 

whats the stock rev limit on the h22s?? 7.7k right?

 

you need practice on driving
maybe you're shifting into 2nd before you get traction in first so it will bog down.
even if you're at 8k rpm and your tires are slipping, you gotta get traction before you shift into the next gear or it will bog down like that.

 

yeah rev cut is 7700.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">8k on the tach is the stock rev limiter. In reality its 7700, the tach is off.</TD></TR></TABLE>

This has been my experience also, tach showed 8K at rev cut, V-AFC indicated 7704 max rpm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vlang29 &raquo;</TD></TR><TR><TD CLASS="quote">yeah rev cut is 7700.

This has been my experience also, tach showed 8K at rev cut, V-AFC indicated 7704 max rpm.</TD></TR></TABLE>

thats weird cuz in my tach is at like 7.6 so thats why i shift at 7.5k

 

im intrested in known what is the right rpm (roughly) to launch at to have traction for a good run.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97BB6Type-SH &raquo;</TD></TR><TR><TD CLASS="quote">im intrested in known what is the right rpm (roughly) to launch at to have traction for a good run.</TD></TR></TABLE>

absolutely no way for us to tell you that without driving your car. Depends on your driving style, how much you like replacing clutches, Suspension, tires, engine torque and many many many other factors.

My best advise is go out and practice
*disclaimer: only on a closed course, of course! *