lsv swap when should vtec kick in?
#1
Honda-Tech Member
Thread Starter
Join Date: Dec 2009
Location: JERSEY
Posts: 93
Likes: 0
Received 0 Likes
on
0 Posts
lsv swap when should vtec kick in?
I have a lsv swap b18a block b16 head with gsr ecu (p72) at what rpm should vtec kick in? To me it feels late maybe almost 6 grand. Could it be wrong ecu? Could i use a a p28, get a vtec controller or is my problem bigger or do i not have a problem? Im just looking for some help im new to the lsv swaps i had a b16 swap in my old hatch and vtec popped at like 4,200 rpm's thank you in advance.
#3
Honda-Tech Member
Join Date: May 2007
Location: hollidaysburg, pa, 16648
Posts: 431
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
isnt a p72 a gsr ecu if so it should be 5500 right? also id just get a tune before you screw allt he work you just did
#4
Honda-Tech Member
Re: lsv swap when should vtec kick in?
The P28 is what you want. VTEC will engage at the ideal 5200 RPM.
The GSR ECU you are using is most likely throwing codes as well because it will be looking for the IAB's which are not there.
The GSR ECU you are using is most likely throwing codes as well because it will be looking for the IAB's which are not there.
#5
Honda-Tech Member
Join Date: Sep 2009
Location: Atlanta, GA
Posts: 125
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
The vtec switchover point all depends on your motor, and your tune.... a lot of my friends think that many LSvtec's run perfectly with their vtec point set to 4,500... but, thats not true. My friend has his B20Vtec set to 4300 and i had to have mine set to 5,800 for it to work at its best. It really just depends.
#6
Honda-Tech Member
Thread Starter
Join Date: Dec 2009
Location: JERSEY
Posts: 93
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
well at 4500 rpm's it sounds like the vtec's popping but dosnt feel like it then around 5800 it pulls hard as hell. At low rpms it fells a little slugish. A friend of mine told me to get a chipped p28 because the p72 (gsr) one is reading sensor's and thats why it feels the way it does at low rpm's and the vtec popping wierd.
Trending Topics
#8
Honda-Tech Member
Join Date: Dec 2009
Location: Bremerton Washington
Posts: 89
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
I have an ls vtec.. I'm running a b18a block, b18c head (p72 gsr head) with b16 a pistons.. I'm running a custom tune, not just a stock gsr or si tune. you have a custom motor there for a custom tune should be put to use.. Your vtec should crack at whatever your tune is set, do you know if your ecu is virgin? to be honest, and some may argue.. it's better for your vtec to be a smooth cross over... you shouldn't get a HUGE boost in power when vtec kicks in, it should be smooth, that's a good thing. My B17 da integra has a chipped jdm pr3 ecu, vtec cracks low at 4200 rpms and I redline at 8800, but my vtec is super smooth, I can run between 4100 and 4300 and feel no difference, I just hear the vtec crack. The point isn't to gain power, it's to hold your power to redline.
#11
Re: lsv swap when should vtec kick in?
well at 4500 rpm's it sounds like the vtec's popping but dosnt feel like it then around 5800 it pulls hard as hell. At low rpms it fells a little slugish. A friend of mine told me to get a chipped p28 because the p72 (gsr) one is reading sensor's and thats why it feels the way it does at low rpm's and the vtec popping wierd.
#12
Honda-Tech Member
iTrader: (1)
Join Date: Feb 2007
Location: stockton, ca, united states
Posts: 1,116
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
First of all. Like everyone said get it tuned. And no way you will not need a VTEC controller. Get a p28 and ask around for a reputable tuning shop.
#14
Honda-Tech Member
Join Date: Nov 2002
Location: Maricopa County
Posts: 2,659
Likes: 0
Received 0 Likes
on
0 Posts
Re: lsv swap when should vtec kick in?
Tuned with Hondata S300 or nothing! None of the suggested ECU's have the correct map to run an LSVTEC the right way.
#15
Honda-Tech Member
Join Date: May 2007
Location: hollidaysburg, pa, 16648
Posts: 431
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
B20inDCinLBC
Acura Integra
6
10-30-2006 10:04 AM