AP2 vtec should be lower
02-08-2007, 10:55 AM
#11
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Honda made the VTEC switch over point what it is for Mileage and cruising. I'd hate to be on the Freeway in 6th gear doing 75mph in Vtec. Can you say <15 mpg?!
If you have an 06+ and you want an optimized tune, get a hondata reflash and you're done. Vtec is lowered, but is throttle sensitive... Brilliant.
www.hondata.com
If you have an 06+ and you want an optimized tune, get a hondata reflash and you're done. Vtec is lowered, but is throttle sensitive... Brilliant.
www.hondata.com
02-08-2007, 02:48 PM
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well the only reason honda kept vtec after 6 grand is mostly because of gas mileage... but jus make sure you becareful when you mess with vtec points, need to upgrade cam's, springs, and maybe valves or you can run into some serious problems in the long run
02-08-2007, 03:06 PM
#14
i remember when i had my del sol b16, i lowered the vtec to 4,500 with a fields vtec controller and that thing sucked BIG TIME!! it was just a test... i would assume, lower the vtec to a certain rpm would be taking advantage of the band, but there's a certain point where lowering it too low will result in lost power.
scott
scott
02-08-2007, 06:15 PM
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I've seen this done before and makes the most sense to me....
High Cam pass:
Get on a dyno and set your vtec to say 3000rpm > Do a full pass to redline.
Low Cam Pass:
Then set vtec to say 6800rpm > Do another full pass to redline.
... This has basically shown you what power each cam, high and low, makes at WOT. Then Plot the 2 graph curves against each other and where the 2 lines cross, is where the vtec switch over point should be.
High Cam pass:
Get on a dyno and set your vtec to say 3000rpm > Do a full pass to redline.
Low Cam Pass:
Then set vtec to say 6800rpm > Do another full pass to redline.
... This has basically shown you what power each cam, high and low, makes at WOT. Then Plot the 2 graph curves against each other and where the 2 lines cross, is where the vtec switch over point should be.
02-09-2007, 06:51 AM
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Originally Posted by AP2_S2K,Feb 8 2007, 07:15 PM
I've seen this done before and makes the most sense to me....
High Cam pass:
Get on a dyno and set your vtec to say 3000rpm > Do a full pass to redline.
Low Cam Pass:
Then set vtec to say 6800rpm > Do another full pass to redline.
... This has basically shown you what power each cam, high and low, makes at WOT. Then Plot the 2 graph curves against each other and where the 2 lines cross, is where the vtec switch over point should be.
High Cam pass:
Get on a dyno and set your vtec to say 3000rpm > Do a full pass to redline.
Low Cam Pass:
Then set vtec to say 6800rpm > Do another full pass to redline.
... This has basically shown you what power each cam, high and low, makes at WOT. Then Plot the 2 graph curves against each other and where the 2 lines cross, is where the vtec switch over point should be.
Now, with these controllers can you change the VTEC point differently for different gears? If yes, should you do the low pass and high pass in each gear??
Thanks!
02-09-2007, 07:10 AM
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Originally Posted by vtec9,Feb 8 2007, 09:13 PM
vtec won't kick in with partial throttle.. I don't know the percent though.
02-09-2007, 08:42 AM
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Originally Posted by TraviS2000,Feb 9 2007, 07:51 AM
Now, with these controllers can you change the VTEC point differently for different gears? If yes, should you do the low pass and high pass in each gear??
Thanks!
02-09-2007, 08:45 AM
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Originally Posted by Lionheart,Feb 9 2007, 08:10 AM
What do you mean by 'VTEC won't kick in with partial throttle'? Are you saying the hot cams are not being used? So the low cams take the engine upto 9000 rpm? Are we sure about this? Just wondering since I do most of my VTEC under partial throttle and it gives quite a kick. I can't see to find much difference between the WOT kick and this one.
