Date: Fri, 06 May 2005 15:50:59 GMT
From: "Dexter J" <>
Subject: Re: rrett t3 turbo

Salutations: On 6 May 2005 06:55:50 -0700, es <> wrote: > > OK i think i will go with the one i got right now and just 3" down > pipe. will it be better if i get the intake manfoled from the newer 2.3 > turbo saab 9000 engein. where can i get one of thoes and i have a M > boost controler right now what do u guys think i should run for psi im > at 14 right no. i heard it would be better if i run the fiul presher > regulater from a non turbo saab is that true. i just wont to have a > better topend on the car what is the best way to do this bcs the lowend > is really nice as is. later when i get the t28 in there it should be > really nice does enyone know where i can get a good t28 > > THANKS I'm not sure we are on the same lines here. Top end on a stock SAAB turbo is well and above *anything* you will ever likely use unless you live in a place that doesn't issue 'reckless endangerment' tickets or are retiring the machine to racing exclusively. If you are simply looking for more total boost - and you are not Trionic under the hood - get a manual boost controller and dial back when the waste gate opens. I believe your stock turbo is good for the better part of 19 or 20 psi. But - and this is very important - your engine management computer will cut off fuel when it senses the inevitable engine knock this will cause (the car will 'buck'). And let me assure you, the stock SAAB engine protection system (the chip) is very conservative in this regard.. You can get a feel for this by removing one of the BPC controller hoses to the waste gate - which will allow your car to boost well above the noted red-line on the dash. Hit for details - beware you can easily still blow up your turbo/engine if you are not very careful when you do this. The real strength and objective of the SAAB Turbo is to provide much quicker 40-90mph acceleration rates (or more accurately - 2,500 to 4,000+ rpm rates) without eating the pistons as would normally be the case in manually controlled Turbo systems. For whatever it is worth knowing, basically, when you pull out to pass in a stock SAAB turbo in good working order - you are making roll on acceleration rates that are competitive with Ferrari. Where most folks have trouble with turbo systems (SAAB or otherwise) is the spool up (or lag) when they plant their foot. This is overcome in 5 speed cars by downshifting - then planting the foot while turbo inertia is already overcome. You can also do the same thing by spinning up the turbo before dropping the clutch at start up. This, however, is not a wise thing to do in a 9000 as it tends to eat transmissions pretty quickly. You can pull it off in an automatic as well - but you will eat the transmissions even more quickly. This is where different kinds of Turbo's do different things. Bigger, thereby heavier, turbo units take more time to spool up - but can provide higher total boost pressure without wearing out too fast. Smaller Turbo's provide less total pressure - but spool up faster without wearing out too fast. Hence, while your total boost on a Low Pressure Turbo (LPT) is lower - the effect is that the Turbo delivers more 'tractable' power more quickly from lower RPM ranges. It feels very much like you always have two extra pistons under the hood without the lame timing belt problem. However, it also feels like you are pulling more weight when you are driving given lower total pressure. In my Aero - I have the larger turbo (and several other factory issue controller uprates) which should safely top out in the 225hp range. But I also have some evident lag, I have to wait a moment for the power to come fully on. To use the Turbo to it's full effect - I would use the driving techniques outlined above if I still felt the need to impress the kids. Which, oddly, I don't anymore now that I have the Aero. Life is odd that way I suppose. Anyway, - mostly I use the turbo to avoid hill climb downshifts (I wait) - or to make a quick pass (I downshift) - or to blow up on ramps (just for the fun of leaving the Corvette or Mustang or Bling-Bling'd Rocket behind me wondering if something has gone terribly wrong under their hood). I'm also planning to take up slalom racing again - which is mostly just for the relaxation. So, if you are looking for better overall start-up acceleration without going to a smaller turbo - you open up the exhaust to 3 inches (and not just the down pipe - you have to work all the way out to the end of the exhaust system) and you should look at a better air-filter. You remove the AC condenser so that the stock IC doesn't heat up as quickly - or - you remove the AC condenser AND put a larger IC in to keep it even cooler. Everything after that on the intake that is more than ample to deal with the more rapid increases in pressure (assuming you have an intake system in good working order - no rotten rubber or dried out seals). Next step is to talk to Maptune for a better chipset. Once you have decided on the chip - go with the recommend turbo for the chip. You will be uprating your injectors and fuel regulator accordingly to avoid lean out (ping/knock) - which will kick in the engine protection system at exactly the wrong time. Finally, you will be looking at a better clutch and very likely a transmission rebuild - go with a really serious builder on the latter item if you are breaking into the 250+hp range. You will also want to look at what is attached to the drive pulley on the other side of the engine (water pump, power assist items) - because they will suddenly be operating in sharper curves than they have been. For example, a lot of folks seem to start blowing their cabin heater core after a serious uprate. Is this just age or more rapid changes in pressure? I'm not sure, but it makes sense that some attached systems are rated for certain parameters if you think about it. My personal take is that there are truly monster figures to be pulled out of the SAAB Turbo without nearly as much work as you would have on most other brands. On the other hand - the great appeal of the SAAB Turbo is that it pulls very respectable figures *safely* without a lot of work. The trick, at least how I will probably go, is to *gently* uprate the overall car to better apply the power it came with. Provided with all the usual disclaimers and limitations. -- Radio Free Dexterdyne Top Tune o'be-do-da-day Doris Day - Whatever Will Be all tunes - no cookies no subscription no weather no ads no news no phone in no sign up required - all the Time

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