Still working out some last minute bugs. We ran into a bit of a delema because of how efficient this turbo setup is in this configuration. It spools so easily that the standard Garrett internal wastegate opening can't bleed boost fast enough and we are getting boost creep. So it spools right up to 12psi at the start of the run but as the rpm's go up the boost starts to climb as well and we need to have control of the boost levels for obvious reasons.
Of all problems that we could have it's not a bad one because it shows the setup will be amazing when the bugs are ironed out. Unfortunately this means a delay.
JE will be pulling the turbo's off and porting the opening for the internal gate as a first attempt at solving this problem. Obviously adding some back pressure via high flow cats would solve the problem and be the quick fix but we want to maintain this free flow setup if possible so will try this first.
This is a very common issue with many OEM turbo cars like the mazda speeds and subaru's when you do cat deletes and 3" exhaust setups. Very low back pressure can make these cars creep as well.
If this mod works we will be back in action soon. If it still creeps we may end up needing larger external waste gate setups vs the standard Garrett internal type.
With a bunch of dyno time at this point the gravity drains on the turbo are working flawlessly so that's great news. Amazing how clean and tidy this turbo kit is and how well it fits. Seems like it's OEM!
Still can't get over how ridiculously fast it spools up!
Oh, and for those that are eager to join the gravity feed twin turbo club and not deal with the scavenge pump setup JE said they will be willing to do a limited run on a made to order basis but will require them to be installed at the shop only. Eventually they would be able to build jigs and mass produce so it would be available for order and install anywhere. For now your going to need to go to Maryland to get it! Hit them up for more info if your interested.
sales@jeimportperformance.com