i have a 92 si prelude with a h22a swap setup is aem cai, dc headers, denson idrium plugs, ngk wires, exhust

what is the best setting for my vtec contoller ? right now my vtec kick in at 4k rmp but i dont feel such a big pull as when it hit 5 the stock setting for the vtec on my car, so my friend said i have to setup the air and the fuel to match the ecu...so i thought i should post this up and see if you guys can help me... anyother problem with my car is for some reason my car lags alot 1st and 2nd a stock EK civic kept up with me...then i let my friend drove my car to see if it's me or the car they said the same thing my 1st and 2nd lag so what do you think i should do?

thanks to all who reply.....

 

I wouldn't make changes until you dyno tune..

lowering the x-over may help a bit. But you could run into other problems like running lean etc.

the only way to make any real gains is on the dyno

 

Dyno tune it.

 

yea i know the best is dyno tune but it cost so much over here in austin texas it's like 225 an hour crazy price.......so there's no other way to see what's wrong with the lag? could it be my plugs?

 

my X'over is at 4500 and yea it doesnt pop as hard but on the dyno i gained more power like this... $225 is insane, i was complaining at $150 an hr. but dyno time is essential.

Dynojet248
Mustang Dyno

also before the Hondata and my dyno time i street tuned it for the crossover to hit @ 5000rpm's instead of 5250. just save money and dyno it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hieu512 &raquo;</TD></TR><TR><TD CLASS="quote"> right now my vtec kick in at 4k rmp </TD></TR></TABLE>

Well for one, the crossover you have is too low. I found that 4700 was the best place for my engine. However your engine may like it better somewhere else.

The only right answer to your question is take it too a dyno. 225.00 is alot for 1 hr of time, try going to a different shop.

There are 2 different Apexi "power excel" shops in Texas. They would be the best places to go in my opinion.

Texas

Carboy
7320 S.W Freeway #108
Houston, TX 77074
Phone: (713) 271-9638
Fax: (713) 271-9645

Rotary Performance
311 E Buckingham Rd
Garland, TX 78757
Phone: 972-530-3335

Here is a description of a "power excel" shop