Reply to thread

See what others are reading now! Try Forums > Current Activity

Message: <blockquote data-quote="AD_EG" data-source="post: 4028803" data-attributes="member: 74396">bro i am not a tuner...so i might be wrong..but i have a vafc and also the manual...this is what i think...somebody please correct me if i have posted wrong/misleading infowhat its trying to say,when your VAFC is installed,the VAFC is able to read the original settings/signals being sent by your ECU for VTEC crossover....so if your current crossover is 5.5k rpm,it will tell you its at 5.5k rpm.....now...the reason for that is because the VAFC can change your VTEC crossover points....based on your engine capabilities and based on how your car is tuned.if you change the vtec crossover point,you need to retune the fuel map cause if you only change the crossover value,and not tune the fuel,you are still following the old fuel map based on your ECU.....so if you change lets say from 5.5k change to 4k rpm....your ecu will still follow the old fuel map at 4k rpm.......in short,fuel sent when vtec crossover at 4k rpm,will not be enough cause your ECU still thinks your are driving at 4k RPM without VTEC.That is why you need to use the VAFC to re-tune the ECU....So,yes it will affect your setting if you change your VTEC crossover value.(actually VAFC is an airflow converter,it adjusts air correction...by changing the air signal,you are changing the Fuel)not all vtec engines share the same characteristics....so some will benefit at vtec engaging at a lower value some at a higher value....the "BEST" value cant be provided based on BUTT dyno or based on your friends car setting....you need to get it tuned either by dyno or on the road....hope this helped you to be less confused <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/biggrin.gif"  class="smilie" loading="lazy" alt=":biggrin:" title="Biggrin    :biggrin:" data-shortname=":biggrin:" />---------- Post added at 04:36 PM ---------- 6 hour anti-bump limit - Previous post was at 04:32 PM ----------what car you drive bro ? =]</blockquote>

Verification

The Marketplace Latest

MITSUBISHI / FE658 (RB/BK S2S)
- Started by PIstonHeads
- Chassis and Wheels
Perodua Alza gear up body kit
- Started by jeff6126
- Exterior and Body
brake caliper spray
- Started by jeff6126
- Exterior and Body
Honda city Mugen gtwing spoiler
- Started by jeff6126
- Exterior and Body
Honda Civic FD JSracing GTwing spoiler
- Started by jeff6126
- Exterior and Body
Honda civic FC varis GTwing spoiler
- Started by jeff6126
- Exterior and Body
JSracing GTwing spoiler
- Started by jeff6126
- Exterior and Body
Proton saga drive68 bodykit
- Started by jeff6126
- Exterior and Body
Perodua Bezza projectR body kit
- Started by jeff6126
- Exterior and Body
Honda city gm6 drive68 body kit
- Started by jeff6126
- Exterior and Body

Posts refresh every 5 minutes

VW Malaysia price reduction up to RM9,484 from 15 June onwards + list

Volkswagen Passenger Cars Malaysia VPCM has announced a price reduction on their new cars in light of the sales tax exemption which will take place from:

15th June till 31st December 2020

[ATTACH...

Sepang Circuit debuts 2 new facilities ahead of 2016 F1 Malaysian GP