Hondata

do a leakdown and compression test.

Already did this too. Compression is 165 straight across. Leak down is 2% across the board. This is a real PITA. My brain hurts. I think I tried almost everything so far.

I was trying to look deeper into the cam timing and realized the top end was really ...

Jaker wrote:My first guess would be cam timing is off.

Already checked. Cam timing is right on the money. All timing points line up perfectly.

Thanks

1996 integra
LSVTEC
DRAG turbo kit
STR fuel rail
6097 NGK
Nology wires
8.5:1
Sleeved
GSR head
GSR cams
1mm oversized valves
Skunk2 intake mani
RC750cc
Walbro 255
MSD ign. stuff
S200/GM 3 bar

Engine pulls only 10" at idle (650-750 rpm). Will not hold idle cold. Barely holds idle warm. Falls down to ...

At 24 inches of vacuum with a tester/pump, the highlighted cells move into the 1-2 columns. At idle and cold, the engine only produces only 17 inches. Warmed up, the engine produces about 15 inches.

I think I found the problem.

No leak through or compression tests yet. I'll post the updates. Thanks!

Well, I think it has something to due with vacuum at idle and these cams. It's funny though. We tuned on these cams before and didn't have this problem at that time. I'm gonna put some more vacuum on the MAP sensor and see what happens to the highlighted cells at idle.

This car has been in and out of the shop w/ head gasket related problems. Last tune everything was perfect. Now we're retuning the same map as before, the engine will only idle in columns 4 and 5, sometimes 3 and 4.

The engine is B18 non vtec, 8.5:1, crower turbo cams, skunk2 intake mani, air ...