LS/VTEC no low end power....help
11-21-2003, 10:06 AM
#1
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 698
LS/VTEC no low end power....help
well i finally got my LS/VTEC in, and i got it running.
i have a vacume leek, somewhere?,
car now idles up and down, up and down..........
yesterday sentra SER, (header intake, exhaust)
and i am happy to say i beat him, tie in first and early second, but late second i was gone, and third he was smoked.
so basically the first few days went OK.
last night i reseal the TB, and the reving was finally stable.
Today i drove it and the bottom end was GONE, no power,
the car had no power up to 4000 rpm then it would just kick in HARD, and the car runs find above 4k rpm.
and some times it back fires below 4k......this morning on the way to work i parked in a lot, and noticed the distributor bolts was a little loose, so i advanced it a little pass center, and tighen the bolt. and then the bottom end came back for a little, again it is gone...PLUS the idle is fu_ked up again, (up,down,up,down, MAX 2k rpm).
I dont wanny start tearing down shyt, just to find out it was just a little problem.
My performance setup
96 integra LS
00 GSR tranny
B18B block (stock block)
B16A head (milled, 2 layer gasket, 10.2:1 CR)
00 civic SI ECU (OBD2-1 to OBD2-2 adaptor harness)
stock header,
stock exhaust.
stock intake.
(i have yet to install the skunk2 manifold, and header, but first i need to get car running properly)
i have a vacume leek, somewhere?,
car now idles up and down, up and down..........
yesterday sentra SER, (header intake, exhaust)
and i am happy to say i beat him, tie in first and early second, but late second i was gone, and third he was smoked.
so basically the first few days went OK.
last night i reseal the TB, and the reving was finally stable.
Today i drove it and the bottom end was GONE, no power,
the car had no power up to 4000 rpm then it would just kick in HARD, and the car runs find above 4k rpm.
and some times it back fires below 4k......this morning on the way to work i parked in a lot, and noticed the distributor bolts was a little loose, so i advanced it a little pass center, and tighen the bolt. and then the bottom end came back for a little, again it is gone...PLUS the idle is fu_ked up again, (up,down,up,down, MAX 2k rpm).
I dont wanny start tearing down shyt, just to find out it was just a little problem.
My performance setup
96 integra LS
00 GSR tranny
B18B block (stock block)
B16A head (milled, 2 layer gasket, 10.2:1 CR)
00 civic SI ECU (OBD2-1 to OBD2-2 adaptor harness)
stock header,
stock exhaust.
stock intake.
(i have yet to install the skunk2 manifold, and header, but first i need to get car running properly)
11-22-2003, 02:40 PM
#8
1.0 BAR
Join Date: Dec 2002
Posts: 590
Re:LS/VTEC no low end power....help
the b16 ECU is killing you engine, I'm running my LS VTEC with a P30, VAFC and 450's. I had to REALLY richen up my initial settings, I'm running between -27 to -22 through the rpm band. And by the way, it sucks the gas when you hit VTEC lobes.
11-22-2003, 05:42 PM
#9
3.0 BAR
Join Date: Sep 2003
Posts: 1,752
Re:LS/VTEC no low end power....help
I have the same problem with my single vtec. It feels like I have 10 hp till about 10-15mph then BAM! All hell brakes loose. I thought that it was my map sensor cuz it wasn't hooked up but I hooked it up and that just made it a little faster. I still have a hole down low. It is either too much fuel or something else.
11-23-2003, 04:06 PM
#10
Administrator
Join Date: Dec 2002
Posts: 13,991
Re:LS/VTEC no low end power....help
Originally Posted by crx88Si
maybe a b16a ecu is starvin the b18 for fuel? 
good luck,
Jeff
