Turbocharging - any knowledge in here ?

I think full pressure turbos as standard made 1 bar/14(ish)PSI. Is yours the 2.3 LPT with the intercooler? If so, no worries it should handle it fine.

And Elk Parts do this kit

Sort of roundabout related.

As long as they are properly maintained, Saab engines are pretty damned strong, but much more and maybe think about Tesco super 99 and see if it makes a difference after the ECU had learned to use it.

Carl, the car is a 2.0 LPT with no intercooler, but a BPC valve. So next thing is to fit the intercooler. We're already on the tesco fuel as well.

I'm awfully impressed by this big old bus.

I tried to avoid Saab when wanting something with a "proper comfortable" interior, but as you know, ended up buying one.

I'm also a big fan of the low pressure turbos, but bought a diesel because I'm tight, as you know. :-)

Meanwhile,

I'm sure there are plenty of people who have done this before but that's the 9000 forum and I tend to lurk in the NG900, NG9-3 forums...

You're really going to want to get an intercooler fitted as soon as. I wouldn't run anything over 1bar without one as you risk seriously warm air. The only real gotchas with this engine is that your injectors may not have enough flow capacity to match the boost you're flinging at it. Low down, it may be fine, but high speed, full throttle loads may just stretch them beyond their limits. And we all know the formula for boosted engines without enough fuel...

boost - fuel = bang.

It previously hit the fuel cut out, but since fitting the remapped ECU, it sails way past where that would have happened before. The bloke who did the the reprogramme of the ECU does seem to know his stuff though.

Anyway, I take your point. We do have the intercooler here and the hoses.

You should get the intercooler in there as soon as possible. the Saab fuel cut is boost limited, so that may have just raised the limit. In the 900 it was a hobbes pressure switch in the vac/boost system that did it. I imagine that later 9000 models had it in the trionic system ECU (is yours a DI cassette model or one coil and sperate leads?).

Saabs have a pretty good knock sensor that backs off boost in the standard APC controls but I don't know if the LPTs had the APC unless your upgrade has added the solenoid at the front of the engine bay above the radiator and connected it to the wastegate. The injectors should be OK, but Saabscene and SaabCentral and UKSaabs all have guys who have fitted bigger injectors so you will get an idea.

9000 engines can make over 400bhp, but it tends to be turbo/injectors, both manifolds, bigger throttle body, ECU, intercooler upgrade etc by then. internal work is still minimal though. This is an Abbott 900, (but the 9000 is pretty much the same,) with stock manifold and downpipe fitted.

It definitely has the APC solenoid on the radiator connected to the wastegate. It always had that but no intercooler.

Cool, then you should still have knock sensing and boost limiting from it, as well as ECU controlled upper boost limit. Some year LPTs had intercoolers but just base boost with no APC function, others got the APC but no intercooler, so the boost was adjustable but just locked down by the ECU/APC programming (it was combined together instead of seperate on later models like yours). A lot of guys wire up an LED to the knock signal wire from the ECU and mount it in the dash or on any guage cluster they add.

I wouldn't go over 1 bar. And definitely not without an intercooler.

Fraser

With an IC fitted it would be fine. Saab 9000 FPT models are more than 1 bar anyway.

900 FPT models are .9bar with the APC fitted. And they only set so low because the gearbox had trouble handling more than 2/3 extra power/torque than originally intended without grenaded. 300BHP 900 engines can almost be built with bolt on parts which isn't bad as they start out at 175/185bhp.

Today it seemed happy with 18psi. That seems to have crept up a tad compared to the other day.

We're pencilling in next weekend for intercooler installation. Brother is then determined to fit a 3" downpipe and cat after that. (As well as the previously mentioned actuator).

Whatever the case, we'll be done after that. More boost equals more fuel equals bigger injectors and potentially head gasket woes.

P.S. that run today was with a trailer on the back with a cement mixer on it and the fuel economy actually crept up as the journey progressed :-)

Fit that 'cooler ASAP. Running anything over about 10-12psi with no cooler is going to be a fast receipe for uncontrollable detonation and holed pistons.

It must be pulling the timing back something cronic in an attempt to control knock. - you run the risk of a melted turbo too from the extreme EGT's.

Tim..