Yes mine are gone and I've been loving every second of it.
As Brad said PINNING them should show only losses. It's only a test NOT A DAMN MOD!!! WAKE UP PEOPLE! :p Especially when not done correctly to get the early timing & fuel ramp up.
Okay now that we've said that for the umpteenth time...
Also on A/F tuning. 1000rpm increments are the best. Except for where my power (timing & fuel) comes on (2500) and redline (7500). They are the only 2 places I use 500rpm increments. IIRC Kaiser has seen the same thing in his dyno testing.
I wouldn't bother boring the LIM out to 37mm when the DH UIM is around 30.5/31.8mm respectively & the 99-00 SVT head inlets are only ~34mm.
The late model 99 & 00 SVT's LIM is already:
Inlet: 33.5/34.5
Outlet: 32.5/34
I would port match everything and make sure they go back together aligned properly. There is machining & casting flash EVERYWHERE!
After extensive EH on my UIM it came back as:
Primary: 33mm
Secondary: 34.3mm
I still didn't need to open up the inlets of the LIM. (I did port match UIM to LIM)
However I did take the taper out of them to match the head ports. Which I opened a little as well. More truthfully I knocked a bunch of machining flash off that was pushed into the ports!
My original compared to my final numbers:
UIM
30.5mm/31.8mm ~ 33mm/34.3mm
LIM Inlet
33.5mm/34.7mm ~ same - UIM ported to match
LIM Outlet
32.5mm/34mm ~ 34.5mm/35mm
Head Inlet
34mm/34.5mm ~ 34.5mm/35mm (bigger valves anyone! Computer models show the valves are too small! Exhaust especially!!!)
