 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Saab Cars / March 2004turbo pressure gauge/ecu over-ride
Has anyone here added an aftermarket pressure gauge successfully? Also I wanted to know I know there is a way to manually over-ride the ecu temporarily for more power (pressure in the turbo). I saw somewhere some guy put a button in. Any ideas? Thanks, Alex  Signature---------------------------------------------------------------- Alexander Reid (Scania) http://www.cardomain.com/id/scania > Has anyone here added an aftermarket pressure gauge successfully? Sure. > Also I wanted to know I know there is a way to manually over-ride the ecu > temporarily for more power (pressure in the turbo). I saw somewhere some > guy put a button in. Any ideas? First idea: unwise. Second idea: any particular engine, year, and model? The engine management systems in the last decade or so are far, far more sophisticated than getting more power from 'pressing a button'. There are a large number of performance add-ons specifically made for your particular model of Saab; anything homebrew is likely to underperform and/or endanger your engine. Dave Hinz Ahh here it is check this out. Also go to the "home" page on there, and check out his other performance modifications. Any on there unwise? Thanks, Alex http://www.lehigh.edu/~erp4/saab/Upgrades/BoostControl.html or the home page http://www.lehigh.edu/~erp4/Saab.html > Has anyone here added an aftermarket pressure gauge successfully? > > Also I wanted to know I know there is a way to manually over-ride the ecu > temporarily for more power (pressure in the turbo). I saw somewhere some > guy put a button in. Any ideas? Thanks, Alex > Ahh here it is check this out. Also go to the "home" page on there, and > check out his other performance modifications. Any on there unwise? > Thanks, Alex > http://www.lehigh.edu/~erp4/saab/Upgrades/BoostControl.html > or the home page http://www.lehigh.edu/~erp4/Saab.html I can't get to the pages you mention, but his home-page responds somewhat. So, without seeing it...the Saab system adjust the boost level to the safest possible pressure (just short of pre-detonation) thousands of times per second, on a once per spark basis. Each compression stroke is analyzed by measuring the impedance of the fuel:air mixture while it's being compressed to decide when the spark will be fired, and boost and fuel mappings are based on that and other factors. Maybe this guy has improved on that process in which case he'll have no trouble getting a job, but if this is just some "increase base boost" or "increase max boost", it's not going to help. Saab already uses the max boost at all times, again as measured on a per-spark basis. Dave Hinz >Ahh here it is check this out. Also go to the "home" page on there, and >check out his other performance modifications. Any on there unwise? >Thanks, Alex >http://www.lehigh.edu/~erp4/saab/Upgrades/BoostControl.html >or the home page http://www.lehigh.edu/~erp4/Saab.html What year is your car? This mod works only for trionic 5 motors. It will not do much for a trionic 7 motor as the ECU will fight back. For the Trionic 7 cars you will have to purchase an ECU upgrade ($500 minimum). Yea I have a trionic 5, and an upgraded ecu. Otherwise I have a 1999 9-3 se 5 speed. What do you think Bob? > >Ahh here it is check this out. Also go to the "home" page on there, and > >check out his other performance modifications. Any on there unwise? [quoted text clipped - 6 lines] > For the Trionic 7 cars you will have to purchase an ECU upgrade > ($500 minimum). >Yea I have a trionic 5, and an upgraded ecu. Otherwise I have a 1999 9-3 se >5 speed. What do you think Bob? A manual boost control (what I think you saw at Eric's site, it seems to be gone) does what the ECu upgrade does but in a much cruder way. I don't think there is any advantage to an MBC once you do the ECU upgrade unless they took some shortcuts. What upgrade did you buy ? I bought the Abbott racing ecu and comes with a new waste capsule that boosts my car 40+ horsepower. Totally awesome by the way, you can def. feel the power. AMAZING is all I can say, even the Saab technician that I get to do all my work was amazed. So if anybody here is considering a new ecu, then go for it if you have the money. (he only downside) -Alex > >Yea I have a trionic 5, and an upgraded ecu. Otherwise I have a 1999 9-3 se > >5 speed. What do you think Bob? [quoted text clipped - 3 lines] > I don't think there is any advantage to an MBC once you do the ECU > upgrade unless they took some shortcuts. What upgrade did you buy ? >I bought the Abbott racing ecu and comes with a new waste capsule that >boosts my car 40+ horsepower. Totally awesome by the way, you can def. feel >the power. AMAZING is all I can say, even the Saab technician that I get to >do all my work was amazed. So if anybody here is considering a new ecu, >then go for it if you have the money. (he only downside) -Alex The MBC will not help you then. The ECU is already doing the job. There are other things you can do that will make the car better. Stiffer springs will help you apply the power you have. Some other suspension mods will be a lot of fun. There are lots of nice things you can do for the suspension too. Post if you'd like hints. IN the engine area, you might consider a Saab Sport Exhaust. You might want to rework the airbox to pull cool air from the bumper area with a 3" or larger snout and with a K&N filter. Also take a look at Eric's "porting and polishing" of the throttle body transition casting and consider doing both ends (smoothing both the intake end and matching the other to the throttle body/manifold. I agree with Dave Hinz about not overriding your ECU. The stock one, or the modified ECU will both serve the purpose of protecting your engine from detonation. A manual boost control is not adaptive to your environment (i.e. heat/cool, humidity, altitude, etc) and the setting you use with a MBC in one situation could be detrimental in another. On the other hand, I don't know about the '99 9-3's, but in the C900 the additional steps one might take are often related to fuel delivery. Increasing the pressure of the Fuel Pressure Regulator, larger injectors, higher pressure fuel pump, etc, all factored in could help produce more HP without removing the ECU from protecting your engine. (Also, in the C900 the Bosch Jetronic fuel system was tied in to the boost protection at an unnecessarily low pressure (approx 14-15 psi) and would cut the fuel at higher boost). nate_t_g 88 900 SPG 87 900 T16 > I bought the Abbott racing ecu and comes with a new waste capsule that > boosts my car 40+ horsepower. Totally awesome by the way, you can def. feel [quoted text clipped - 10 lines] > > I don't think there is any advantage to an MBC once you do the ECU > > upgrade unless they took some shortcuts. What upgrade did you buy ? |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.