((EDIT)) FOR COMPLETE WRIGHTUP SEE PAGE 3 OF THIS THREAD
after doing some research, I've decided to dive into a T5 conversion on my vert,, thankfully i think its alot easier than many of us have made it out to be.
today i got the CPS and CPS bracket squared away, this went surprisingly smooth, thankfully SPGBEE88 had an extra motor i could use as a template for the process.
the bracket is made from a saab motor hook, (one that bolts onto head, bolt holes are the exact same length apart as two bolts on oil pump cover) and some scrap of mettle i had sitting around the house.
here's what they look like
the crank wheel fits conveniently over the c900 AC pulley, so after getting everything mounted, i lined up the CPS sensor with the wheel, made my marks and tacked away.
here's the outcome.
hears the splice list for what is needed to be cut and added
-speed sensor, this can be found in the 2.4 ecu connector, this is the easiest spot to get to it
-brake switch, no need to tap into this. T5 doesn't need to know your on the brake
- fuel pump trigger, found in 2.4 plug, make sure that you power the relay properly, going straight from ECU to to fuel pump will overload the cicut on the computer and shorted the ECUs life. this relay is located above the old Jetronic ECU inside the car on the passengers footwell.
-Tach wire, Pin 7 on ignition amp, right next to APC box. both pin 7 and pin 1 are blue wires,, pins are listed on ignition amp itself not harness.
- upshift shift light Why would i ever want this???? leave it out. (if you want this, look to jetronic ECU plug)
-main relay , main relay is located above Jetronic ECU housing. youll need a wire going in to tell it to turn on, to to tap into an output wire for the injectors, AIC and other large items in the motor bay.
-always hot(+12) power
getting power to the ECU is a one of the more difficult pieces. the T5 ECU needs one always HOT (+12) lead, this is Pin 1, tap into the battery or distribution block.
after this there is one switched power,, for this look to the main relay (located next to power steering reservoir)
-ground all the needed ground for a 9000 bolt to the intake manifold, these grounds power the ECU. the holes in the 9000 harness are to small to be put anywhere on a 900 intake manifold. you have 3 options.
1, drill out ground lugs
2 cut/crimp new ground lugs on
3 screw to throttle body, my TB has a blockoff plate on the top of it, this allen screw is the right side, and shows 0 voltage drop. TB= WIN (atleast for me)
later series saab 900 turbos (like my 1993) use a 2 wire AIC valves, this is compatible with T5.
2.1 throttle body's have the proper TPS sensor simply swap the TB out
change out
- fuel injectors. and fuel rail/ FPR. 9000 turbos all have 3.0 bar FPRs, this can be achived buy either using an NA FPR, or swapping out to a full 9000 fuel rail. (some fab required for 9k rail)
-coolant temp sensor.
- O2 sensor.
the T5 wiring harness from a 9k is mostly ready to go how you pull it out, but some prep is required.
first, you should simply familiarize yourself with it, so you know what all the plugs are, i also found it very helpful to un-do much of the factory tape, this way i could pull on a wire from a sensor and see where it ends up. (IE undoing tape makes tracing easyer)
when you redo the harness note that the IAT and DI plug will need to be separated, there's plenty of wire to spread over the harness, but there very tightly bound on the 9k harness.
organize the harness also, this makes life years easier.
when pulling the harness from a 9k, cut the grey plug off on the car end, with as much wire hanging out as possible, this wire gets spliced, in this grey plug there are main power leads to your injectors AIC valve, DI, and computer... very very very important grey plug
pics posted tomorrow
any questions just ask, i must have missed something...
after doing some research, I've decided to dive into a T5 conversion on my vert,, thankfully i think its alot easier than many of us have made it out to be.
today i got the CPS and CPS bracket squared away, this went surprisingly smooth, thankfully SPGBEE88 had an extra motor i could use as a template for the process.
the bracket is made from a saab motor hook, (one that bolts onto head, bolt holes are the exact same length apart as two bolts on oil pump cover) and some scrap of mettle i had sitting around the house.
here's what they look like
the crank wheel fits conveniently over the c900 AC pulley, so after getting everything mounted, i lined up the CPS sensor with the wheel, made my marks and tacked away.
here's the outcome.
hears the splice list for what is needed to be cut and added
-speed sensor, this can be found in the 2.4 ecu connector, this is the easiest spot to get to it
-brake switch, no need to tap into this. T5 doesn't need to know your on the brake
- fuel pump trigger, found in 2.4 plug, make sure that you power the relay properly, going straight from ECU to to fuel pump will overload the cicut on the computer and shorted the ECUs life. this relay is located above the old Jetronic ECU inside the car on the passengers footwell.
-Tach wire, Pin 7 on ignition amp, right next to APC box. both pin 7 and pin 1 are blue wires,, pins are listed on ignition amp itself not harness.
- upshift shift light Why would i ever want this???? leave it out. (if you want this, look to jetronic ECU plug)
-main relay , main relay is located above Jetronic ECU housing. youll need a wire going in to tell it to turn on, to to tap into an output wire for the injectors, AIC and other large items in the motor bay.
-always hot(+12) power
getting power to the ECU is a one of the more difficult pieces. the T5 ECU needs one always HOT (+12) lead, this is Pin 1, tap into the battery or distribution block.
after this there is one switched power,, for this look to the main relay (located next to power steering reservoir)
-ground all the needed ground for a 9000 bolt to the intake manifold, these grounds power the ECU. the holes in the 9000 harness are to small to be put anywhere on a 900 intake manifold. you have 3 options.
1, drill out ground lugs
2 cut/crimp new ground lugs on
3 screw to throttle body, my TB has a blockoff plate on the top of it, this allen screw is the right side, and shows 0 voltage drop. TB= WIN (atleast for me)
later series saab 900 turbos (like my 1993) use a 2 wire AIC valves, this is compatible with T5.
2.1 throttle body's have the proper TPS sensor simply swap the TB out
change out
- fuel injectors. and fuel rail/ FPR. 9000 turbos all have 3.0 bar FPRs, this can be achived buy either using an NA FPR, or swapping out to a full 9000 fuel rail. (some fab required for 9k rail)
-coolant temp sensor.
- O2 sensor.
the T5 wiring harness from a 9k is mostly ready to go how you pull it out, but some prep is required.
first, you should simply familiarize yourself with it, so you know what all the plugs are, i also found it very helpful to un-do much of the factory tape, this way i could pull on a wire from a sensor and see where it ends up. (IE undoing tape makes tracing easyer)
when you redo the harness note that the IAT and DI plug will need to be separated, there's plenty of wire to spread over the harness, but there very tightly bound on the 9k harness.
organize the harness also, this makes life years easier.
when pulling the harness from a 9k, cut the grey plug off on the car end, with as much wire hanging out as possible, this wire gets spliced, in this grey plug there are main power leads to your injectors AIC valve, DI, and computer... very very very important grey plug
pics posted tomorrow
any questions just ask, i must have missed something...