Brettus Turbo install thread
11-02-2008, 02:58 AM
#52
Dang right there - sooo tempting to take it all the way but concerned about if the Mazsport coils on factory dwell will do an mysql on me - heh .
also have a lean spot at 3700 which i can't get rid of - will see if Hymee can stage the secondary injectors in a little earlier ...
also have a lean spot at 3700 which i can't get rid of - will see if Hymee can stage the secondary injectors in a little earlier ...
11-04-2008, 08:19 AM
#58
Drove over to Thames yesterday to get Dave (rotorman) to reflash the ecu
After much dicking around and frantic phonecalls to Hymee (who was in the middle of Melbourne cup celebrations). We Did It !!!!!
In one foul swoop (sorry Swoope) we did the following
Reduced the redline to 8500
Turned on the fans on earlier
ELIMINATED THE SPEED LIMITER (that has plagued me all this time )
Loaded a SC map for boost
I was quite stunned to find Hymees' map got me almost spot on AFRs immeadiately - and amazingly consistent all the way to the redline . I'd never seen it as good in all my stuffing about with N/A tuning.
Will post a graph later .
So how does it drive - I'ts like OEM but with heaps more power everywhere in the rev range. That is probably the best way to descibe it .
I have not heard this from other FI guys but the motor now feels so much smoother than when it was NA . Acceleration just seems so effortless - kind of like having a v8 under the bonnet (but better) .
Today I start playing with the boost controller - aiming for 8 psi .
Big thanks to Dave for persevering - it was definately worth it !
And to Hymee - hope we didn't drag you away from the champagne and strawberries for too long
After much dicking around and frantic phonecalls to Hymee (who was in the middle of Melbourne cup celebrations). We Did It !!!!!
In one foul swoop (sorry Swoope) we did the following
Reduced the redline to 8500
Turned on the fans on earlier
ELIMINATED THE SPEED LIMITER (that has plagued me all this time )
Loaded a SC map for boost
I was quite stunned to find Hymees' map got me almost spot on AFRs immeadiately - and amazingly consistent all the way to the redline . I'd never seen it as good in all my stuffing about with N/A tuning.
Will post a graph later .
So how does it drive - I'ts like OEM but with heaps more power everywhere in the rev range. That is probably the best way to descibe it .
I have not heard this from other FI guys but the motor now feels so much smoother than when it was NA . Acceleration just seems so effortless - kind of like having a v8 under the bonnet (but better) .
Today I start playing with the boost controller - aiming for 8 psi .
Big thanks to Dave for persevering - it was definately worth it !
And to Hymee - hope we didn't drag you away from the champagne and strawberries for too long
Last edited by Brettus; 11-04-2008 at 08:22 AM.
11-04-2008, 08:23 AM
#59
If the map is based on airflow... more airflow = more fuel, thus the sc map should work well on your turbo car.
remember, for the gains you feel now, the 3071R literally doubles it.
remember, for the gains you feel now, the 3071R literally doubles it.
11-05-2008, 10:25 AM
#62
288 is ok at 8.5 and a fair indicator of power. I have at times seen close to 300 at around 8.5-8.7. Not comparing now--it doesnt mean mine is better etc etc.
Since you now have some torque(remember that?) dont load the engine below 3-3.5K. Its easy to do because the power is there. But the engine actually does not like low rpms. centrifucal(spelling and I dont care) force is our friend!
OD
Since you now have some torque(remember that?) dont load the engine below 3-3.5K. Its easy to do because the power is there. But the engine actually does not like low rpms. centrifucal(spelling and I dont care
) force is our friend!OD
11-05-2008, 03:10 PM
#65
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Grats Brettus, must be a BLAST to drive!
11-05-2008, 03:35 PM
#66
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You may want to take a look at the OMP values and adjust if you think it might be necessary based on where your car is now making torque. I can't recall what the stock table looks like... it's possible it's fine as is.
11-06-2008, 02:17 AM
#72
This does raise some interesting questions about mysql's issue but I'll leave that for another thread.
Last edited by Brettus; 11-06-2008 at 08:58 AM.
11-06-2008, 10:42 AM
#73
our seals use centrifigul force to help seal everything.--faster you spin the rotors the tighter/better the sealing --to a certain point of course..
Most folks more experienced than I have told me to not lug the engine--even though now you have the power to comfortably accelerate in 6th gear while at 2K-- it doesnt mean that it is a good thing to do. Blow by etc were listed as reasons not to.
Actually also-- in theory --detonation is also more likely to occur at lower rpms.
Besides its one hell of a lot more fun to wind that baby up a little!
OD
Most folks more experienced than I have told me to not lug the engine--even though now you have the power to comfortably accelerate in 6th gear while at 2K-- it doesnt mean that it is a good thing to do. Blow by etc were listed as reasons not to.
Actually also-- in theory --detonation is also more likely to occur at lower rpms.
Besides its one hell of a lot more fun to wind that baby up a little!
OD
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11-06-2008, 02:24 PM
#74
Tried running with the BOV venting to atmosphere this morning so I could hear the pssssssh noise . heh .
I was deccelerating past a bunch of school kids and it let out an almighty backfire scaring the crap out of poor little tykes .
Runs heaps better on recirc so I'll leave the pssssh noises to the boy racers .
I was deccelerating past a bunch of school kids and it let out an almighty backfire scaring the crap out of poor little tykes .
Runs heaps better on recirc so I'll leave the pssssh noises to the boy racers .
11-06-2008, 06:58 PM
#75
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The coil dwell is in milliseconds, so 395 is .395ms, which is the stock value across all voltages at 9000. I've seen Scott recommend using values of 3-3.5ms for FI, and how 2.0 is "adequate" for NA applications. But I've never seen the actual ratings for the Mazsport coils posted anywhere.
Regardless, the stock table interpolates the values from highest value top down by battery voltage, and right to left by RPM so I find it unlikely that 3000 or 3500 would be what you'd want to set it to at 9K.
Regardless, the stock table interpolates the values from highest value top down by battery voltage, and right to left by RPM so I find it unlikely that 3000 or 3500 would be what you'd want to set it to at 9K.