Starting to get there then Jamie. Sounds like you had/have a couple of things leading to your boost not meeting the requested. Is there no more adjustment in the actuator left? How did CR Turbos modify it?
Glad Bill is sorting you out. He really does offer a top class service and is worthy of all the praise he gets from not only customers but others he helps and gives advice to on here and elsewhere. Businesses like Badger5 are few and far between but because of that they dont need lots of flashy publicity as word of mouth is the best advertising you can get.
Must have been a duff actuator from day one from ATP, mine hasn't changed at all since CR Turbos had my turbo and their rep. is second to none. Sounds like it will all come good with a new MAF and actuator though, good work from Bill. I think my MAF isn't 100% either.
Just a small correction to the diagnosis.. the actuator is a 9psi one when tested, not 0.9bar.. so the deficit in request vs actual is related to the preloaded actuator.
Initially the pressure test showed a leak, and a couple of loose pipes to the N75, which would'bt have helped things, so actuator to N75 pipe was replaced with a new section of silicon pipe. ends done up tight, re-tested with the pump and held ok.
The actuator rod looks like it has been crimped at some point, so winding it undone was a 'mare of a job. and the thread bottomed out after only 3 to 4 difficult turns. The actuator as set had no preload tho.. which is not a good setting.
timing pull was minimal, boost rose from an initial 1900mb on a request of 2350mb to a post adjusted 2300mb against request. Not quite holding it, and duty cycle pegged at 95.3% max'd
Airflow as said was pretty dire at only 123g/s first logs. Swapped for a.n.other MAF I had around of same part number and these rose to 168g/s. but still cr4p for a GT2x. I have GT2x logs on an ibiza running 190g/s from only slightly more boost. I cleaned the original sensor, reinstalled it for the journey home. new one will fix things in that dept. (and reduce the popping from the exhaust, which on the day was'nt much at all)
A higher preload actuator will be got from Forge, and the next visit I will remove the old actuator bracket and modify it for the forge actuator. We will then see what it can do as duty cycles will plummet then, and requests will be achieved.
Nice to meet you and Damian yesterday - I think we're getting to the bottom of it tho.
(had a fiddle with my ibiza after and got its part throttle overfueling dialed out when revving it.. - 'smokin' - )
oopps, sorry, thanks Bill for the more "accurate" description
what amazes me, and what a work colleague has just said to me is why this was not all diagnosed from the start? with the intial install/setup etc
anyhow, we are getting there and i cant wait till 2 weeks time for the revisit, and hopefully getting to 1.4/1.5 bar, as even with the small increase of 0.2bar that Bill got out of it, it has made quite a nice difference
Bill the different actuator was not the standard ATP one, it was one that CR Turbo's fitted themselves along with the hybrid treatment....so not sure what one they fitted or why indeed they crimped the ends!
Mine isn't a Forge actuator, it's the original one that was on the turbo from day one.
How strange. You'd think that if a company is asked to rebuild a turbo they would refit the original actuator or replace with one of a similar pressure.
But how come none of this was picked up originally, why would you map a car that had all these issues???
personally I check actuator pressure frequently on customer cars.. hence buying the kit to do so a long time back. same pump forge use to check their products with. good enough for them
loose leaky pipes also, so no one thing. its been apart a couple of times so far so.. who knows.
no preload on the actuator tho, which is poor practice imho. insufficient preload and static pressure spring as we have seen, and "the" difference between tony's and Robs fundermentally. (sorry rob, i thought you had a forge actuator fitted. my bad)
i tried calling mark @ CR but he was busy, another guy took my number to call back but I have'nt had the call and been buried in meetings all day so not had time to chase him either. will bell him tomorrow (am) - tony, you will have to run the foc angle when i have spoken to him. I will just confirm what and why with him. i will bell you as soon as I have had that conversation with him. plan (b) is still a forge actuator, which i know works fine (as i have run one for a few years now) - just more work to adapt to your setup/brkt
regards
bill