its totally bogus!!!

@ around 4700 RPM the torque drops but power goes up I know its possible but not in the way "drawn" on this "dyno graph"

It makes sense, your on the money. Its also why cars with big plenums/ intercoolers will take longer to get boost....simply need more air to fill the extra volume..

Does a 2 valve head really have 80 % VE??? whats the VE for a 4 valve head??? and how about a 5 valve head???

As for throttle bodies...thats to do with driveability...a big throttle body becomes a big on off switch so the engine becomes hard to control.

"don't turbo cams have less overlap? which is not helpful to a NA engine, because it won't be able to use the exhaust suction to pull in a fresh charge?"

exactly....so if the exhaust duration was longer, (this is what Bundy351 is saying) then the intake duration would be less...(if overlap in a turbo motor is less than on N/A motor).

So basically...turbo cams no good for N/A motors!!!

"I just always presumed that Turbo spec cam shafts had and exhaust grind that opened the valve earlier and kept it open longer."

I believe the opposite to be true???? Due to positive pressure in a turbo cylinder..if the exhaust was open longer, it would mean more overlap with the intake...thus..you would be dumping plenty of fresh air straight out of the exhaust???

hasn't this q been done to death???

S/h a turbo of a tx3 is a good size.

But why buy s?h when new turbos are so cheap??? as already said T25/28 not bad.

HEy dude...I have a Wolf (not selling though)and a Haltech and I reckon if your looking at the old computers eg wolf versions 1-3....youd be better of getting an early model haltech. such as an E6A. The haltechs are more tunable which allows the system to run much better and the difference in price would be mininmal.

I don't have a clue though how good the new wolfs are???

"and if some one has a quater mile time that would be sic"

the N/A motors have about 100Kw @6400 RPM, 162Nm @ 5200 RPM.

Give me the GB ratios and I'll tell u what my little 1/4 mile calc says.

rough guess 6.6 sec and 14.8 sec.

have at look at the rpm...no wonder it "only" makes 35Kw.

Don't weld!! Brazing is better as it does not alter the metal properties. If you do weld it...get the proper heat treatment afterwoods. Grab some washers and put them between the side gears and get the washers brazed onto the gears.

hey 1200rallycar...how come you didn't use a phantom locker on your h190???

A normal o2 sensor only uses the 12v to heat it self up. The sensor itself generates the output voltage..so it does not matter if the 12V is regulated and constant.

Grunterhunter hace you tried ........http://wbo2.com
they seem to sell some reasonably priced??? sensors

Also bosch themselves, from memory have plenty of info on their website.