My Evo X FP red set up.
The set-up he has should not have any sort of leak at that location . We have been running the same setup in our own car for over 25,000 miles with nothing but great outcomes . His slow spool can be attributed to a low pressure spring in the wastegate ( which I already talked to his tuner about two weeks ago ) or to a very mild tune which so far is also a very likely cause for his lower then expected power .
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From my experience a weak wastegate spring usually affects the high end and not so much the low end.
Do you think the tuner may have went partial throttle until the turbo started to spool and WOT at around 3500 RPM? We actually used to do that on cars that had surging at low RPM WOT.
I hate to say it, but there could be another reason for the slow spool. Two words first one starts with a "c" second one ends with an "n" .... don't want to spell it out for fear of jinxing the OP.
Uh..... NO, you're looking at *my* graph not his. His is only in the first post, mine is the one in color........
I was only assuming since I have never seen that setup before and his power/torque seems to come in very late.
From my experience a weak wastegate spring usually affects the high end and not so much the low end.
Do you think the tuner may have went partial throttle until the turbo started to spool and WOT at around 3500 RPM? We actually used to do that on cars that had surging at low RPM WOT.
From my experience a weak wastegate spring usually affects the high end and not so much the low end.
Do you think the tuner may have went partial throttle until the turbo started to spool and WOT at around 3500 RPM? We actually used to do that on cars that had surging at low RPM WOT.
I hear you but if a wastegate has a soft spring it will affect the spool because of a delay between the spool and the pressure build-up on top the wastegate . I had the very same issue 10 mins after my first set-up on my X and the correction was using a harder spring . Once again not saying that's his only issue just saying that could be it or even part of it . He still needs to address his overall power gains which do seem a bit low for his mods , and that could be simply a mild tune he may have .
Well, your graph looks spot on, hahaha.
Thread Starter
Evolving Member
Joined: Jul 2008
Posts: 154
Likes: 1
From: San Francisco, CA
did a run today, turbo is in full boost at 4700 or so in 4th gear. Car feels and pulls strong. do not sound or feel like boost leak in the o2/dp to me. any thoughts?
kl
kl
I have a similar setup to you (except for the wastegate and no meth), and I was also slightly disapointed in the results. My torque comes late, but not like yours. It feels good on the street, but I'm thinking it has more potential.
https://www.evolutionm.net/forums/ev...-baseline.html
Any news or retune on yours? do you have the UR O2 eliminator DP?
https://www.evolutionm.net/forums/ev...-baseline.html
Any news or retune on yours? do you have the UR O2 eliminator DP?
