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  1. VVTI question Altezza

    Hi simon I have done the cam test as per your suggestion. On the exhaust cam test it comes back with a steady value of 51.1 degrees atdc. On my DI2 exhaust vvti setup the value in the box is currently 48degrees atdc. Inlet cam test measures steady value of 45.4 degrees atdc and under trigger 2 vvt value it it currently 44.5degrews atdc. So is the exhaust cam value slightly out? Would you recomend to change the exhaust value from 48 to 51.1? Would this make it track better etc. Thanks Brendon
  2. VVTI question Altezza

    hey awesome thanks brad, so your when your exhaust target is 0, your actual position of the eexhaust cam reaches 0? I see its currently very close at around 0.8 etc and follows very close all the way and returns back to 0. My exhaust vvti cam actual position never gets lower than -4.8 ie it never gets back to 0. Do you happen to know your exhaust vvti solenoid duty cycle value when the requested position is 0? Mine shows as 20% when requested position is 0. Still waiting for my original log but getting the feeling my exhaust cam is somehow not returning to the 0 position.
  3. VVTI question Altezza

    Hi rich, yes a few others believe it is all related, ie if my exhaust cam is not returning to the locked position or 0 at low down in the revs and kpa, then the exhaust cam is permanently retarded down low even though it should be off which affects my low down power and hence boost down low as well. Im also getting a bigger turbo, exhaust and manifold with external gate in a few months so trying to rule out a few more things before then. At that point the shop working on my car will check over the internals of the current turbo and do more leak down tests etc.
  4. VVTI question Altezza

    Hi guys, does anyone have a log file from an altezza 3sgebeams running the dual vvti, maybe a dyno session or road run so incan have a look at your vvti cam requestes position vs actual positions? Still trying to get to the bottom of this. Also have some movement sideways on my wastegate actuator flapper so may be a leak ther(not sealing properly), but would like to check some others logs to see what others same spec motors are doing etc before pulling off the dump pipe to have a look at the rear housing. Waiting on my tuner to send my original dyno log as well. Thanks
  5. VVTI question Altezza

    It starts alot better and idles more stable, drives perfect off boost but still tge same on boost. Almost feels like its missing the low down torque pull feeling it used to have. Will let my tuner know your feedback rich so thanks for that im leaning towards tubo just starting to wear out and loosing its puff. Was secind hand rebuilt when i got it 3 years ago so no idea of history or kms etc) The picture attached is fron the dyno day, the previous runs were my initial tune 3 years ago on 7psi spring with no boost solenoid, the last green line is current with boost solenoid to achieve the 9psi. See how much lower down it is initially, thats the loss of power feeling im meaning. Brendon
  6. VVTI question Altezza

    Did a compression test once it had warmed up, ResulResults were good so was hapoy with that! Cyl 1- 180psi Cyl 2- 180psi Cyl 3 -185psi Cyl 4 -182 psi The old plugs had been in for around 3 years thinking about it, done 30000kms on them (5 track days!)and had brown rings above the threaded part on the porcelain almost like compression lekage etc, fitted new plugs so will see how that goes dunno why i overlooked those... Brendon
  7. VVTI question Altezza

    Hi guys thanks for the info. I will do the plugs and compression test first to see how it goes. I have a new air filter and have cleaned the intake etc when i was fixing some small boost leaks around te plenum. The vvti solenoids have been replaced as well as the exhaust cam sensor so these are fine now. Also i change oil every 5000kms so the engine internally should be clean, always comes out a tad off golden. Engine has done 150000kms, turboed at 120000kms. Thanks for the input for the vvti settings and i see what you mean about the vvti table and kpa etc. Dont want to change any settings just yet as it was running fine on this before. So trying to get back to how it was etc. Brendon
  8. VVTI question Altezza

    Hi guys So I have an altezza with the 3sge beams, pnp g4 altezza link ecu and greddy tdo4 turbo kit. Was currently running on a turbosmart wastegate actuator with 7psi spring, tuned at 9.3psi for the last 3 years with no issues. (Was never sure how it managed this with no boost control on a 7psi spring but worked perfect) On my last track day the car suddenly dropped to 7psi boost and would not boost higher and felt sluggish. I initially though boost leak etc. Found a few and now passes boost leak test perfect. Fitted a new actuator spring and wired in a link boost solenoid. My tuner on the hub dyno however could not get the car to get up to its previous 172rwkw. even using the new boost solenoid, it could make 9.2psi but has lost around 20rwkw. he then noticed that the car wasnt responding much to timing changes where some runs would start off good and then drop out, or some runs would just not start off good at all even with no changes to the ecu. He was then thinking maybe sensors or vvti solenoids so I have changed all of these and still no change. Could it be a sign the turbo is just wearing out or something to do with my vvti system? turbo has been on for 3 years with around 5 track days and weekend driving 30,000kms. I have attached my tune file and a log file for a recent test drive logging the intake and exhaust cam positions and targets and solenoid duty cylces. Also a last question is the DI2 value (where the exhaust cam sensor is wired to) never illuminate green or says on when driving, just stays unlit and OFF. (ie the power steering DI1 will illuminate green and change to ON when turning). I have checked all sensor have ground and continuity back to the ecu input pins, and all 3 (crank, intake and exhaust cam sensors all have readings of 1.02 k ohms).Thanks Thanks Brendon Brendon original tune 5.0.3 01-10-16 (after launch control and cold tune start fixed) with boost solenoid settings.pclr vvt log drive.llg
  9. Toyota Altezza Throttle body issue

    Hi dave, pulled plenum off tonight and noticed a small line between the outside of the rubber and the plenum sections on runners two and tgree like it had a tiny leak, so I put sealant around all 4 runner holes, reinstalled the plenum and throttle body, refit all vac lines and it started perfect let it warm up on its own and it dropped down to 1100rpm and idled perfevt like it used to. So I believe the problem has been solved! ::D still cannot believe that it was a leak as all info pointed to a settings probelm until I tried the idle off and ethrottle off tonight which resulted in no change. So thanks to you guys I have learnt a lot about the software and my setup. Can never be too careful I guess.. as I followrd the toyota manual to a t and it specifically said no gasket was required on that particular part due to rubber interface.. so there ya go Will still be taking car to tuner on weekend to get cold start sorted a bit better, and also getting launch control setup as well, have jist obtained an expansion cable to add more inputs and outputs Will be sure to ask for help if I get stuck in the future! Brendon
  10. Toyota Altezza Throttle body issue

    Based in mt roskill, auckland, new zealand. I pulled the engine cover off and removed main breather hose with engine running, again increased with hole open and then blocked with thumb, dropped back to high bouncy idle of 3000rpm or so. Currently pulling it apart again. In terms of how aggressively I cleaned the tb, I merely sprayed degreser inside and then scubbed the walls witj toothbrush etc. And for plenum only pulled off main plenum that mounts to the rubber section, so thats the only seal I have technically broken, but like you said, I checked before reinstalling and it showed it didnt need a gasket in my engine manual.
  11. Toyota Altezza Throttle body issue

    Ok, so set all values to 0 as per daves tables etc, turned off the e throttle so that was not in use.turned off idle control as well. Started car, straight to 3000rpm and then again bounces between 2800 and 3200rpm... So i took the intake off the throttle body, Withe engine off the butterfly is shut. Turned car on and whilst bouncing between 2800 and 3200 rpm i checked it again, still fully shut. I manually pushed it open a few mms and it revved higher. So it seems as tho even with all controls off and butterfly fully shut, it must have a massive leak, yet still maintaning between -18 and -20 vaccum??. Im going to take the plenum off and use sealant everywhere and then try again tomorrow. Hopefully a step in the right direction. Dave is this the main idle igntiion table you were wanting? Thanks Brendon
  12. Toyota Altezza Throttle body issue

    Hi guys, thanks for the continual suggestions and tips, will check blade angle tonight, and yes as david v said, Toyota Altezza throttle body is a partial dbw system (pedal still has cable to throttle body but only opens butterfly certain percentage, then e throttle takes over from there etc) I will check the table values again, and also try turning off e throttle and see if it will run.. All my vac lines are secure, The top one i use for gauges and bov, bottom one is used for the fuel vac line and i have my map sesnor for the ecu board teed into this line as per installation instructions with the link pnp ecu board. Cheers guys Brendon
  13. Toyota Altezza Throttle body issue

    Hi dave, I checked for leaks bit could find none, used various methods including propane and carb cleaner etc, nothing I could find. Dont have access to smoke machine as such. So yes still maybe a throttle body/ecu settings problem. Im taking car to tuner this weekend so will post up his findings, very interested to see what exactly it was. Im not running factory maf meter, its setup with map and iat sensor etc. (3sge plus t). Vac inhg gauge read -20 when idling at 1800 and then dropped to -18 when engine speed would increse to 2000 rpm, and then just fluctuate with idle speed change. Will check the butterfly position when idlong and let you know. It hasn't been modified in any way from factory. ThanKs Brendon
  14. Toyota Altezza Throttle body issue

    Hi dave, I followed your setup exactly except left the fp table value at 0% on 0 . Started car and it immediately was different, revved to 1800 and sat there. Throttle input was good and worked fine, and when letting off it dropped back to 1800, after few minutes if running it crept up to 2000, but was no where near the 3200rpm I was previously getting. However as its still idling quite high with no settings im leaning towards a leak somehwere now. Will check this arvo and report back if I find a leak. I am going to take car back to tuner next week now anyway to get some other stuff done so if I cant get it sorted he will
  15. Toyota Altezza Throttle body issue

    Hi dave, can you just run me through how to turn it off? Ive gone to the idle setup section but no options to disable? Only options for open and closed loop etc. As this sounds like a good thing to try just to see if it will stop revving high. ThaNks