Archer Fabrications
10+ Year Contributor
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- 695
- May 9, 2011
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Scottsdale,
Arizona
hello everyone i just got the car up and running last week or so with the new 6466 in the 1.15AR T4 twin scroll housing and getting it dialled in I'm wondering if i got a housing too big, I'm seeing conflicting results on the eve board and i don't think THAT many people are running this turbo let alone in T4 twin scroll on the DSM platform, but i figured id ask here anyway. I switched to this turbo from an HX40 as many of you know and fabricated and Tig welded a top mount manifold for the new turbo after 9 months of sitting while the manifold was getting worked out. so i get to take it out and first of all I'm expecting full boost by somewhere in the 5500rpm range i know the 1.15 is a large housing but still expected as such. I'm not seeing 30 psi tip 6k rpm, are other people getting better spool then this with this housing? just went out a few minutes ago at 36.6psi and it didn't hit until 6850 and ill be posting the logs.
heres a little bit on whats changed/relevent mods on the car (profile is up to date as well)
PTE6466 Gen2 1.15AR t4 TS
Archer Fabrications Top mount Twinscroll T4 manifold
9:1 2.0
2g head with BC272's, stock intake manifold and 1g TB
FIC2150's
Walbro 450 Rewired
-8 Feed to rail, -6 Return
ETS 4" FMIC
Fuel: VP C16
3.5" side exit with a total length of 35inches.
at first i had an open T4 gasket on the turbo because that was what was supplied from precision, and i thought that may account for the lag but after changing to a Vibrant divided gasket it made no difference the thing still spools really late. any thoughts here or personal experience?
the airflow numbers are under inflated because the Boost set is low, so i probably need to lean out the global some more to get that to match, but I'm more worried about how i can get this thing to spool quicker, or if i should look into a smaller TS t4 housing like the 1.00AR or even the .84 AR
first log is a 3rd gear, second log is a little bit of 1,2 and then the 3rd
heres a little bit on whats changed/relevent mods on the car (profile is up to date as well)
PTE6466 Gen2 1.15AR t4 TS
Archer Fabrications Top mount Twinscroll T4 manifold
9:1 2.0
2g head with BC272's, stock intake manifold and 1g TB
FIC2150's
Walbro 450 Rewired
-8 Feed to rail, -6 Return
ETS 4" FMIC
Fuel: VP C16
3.5" side exit with a total length of 35inches.
at first i had an open T4 gasket on the turbo because that was what was supplied from precision, and i thought that may account for the lag but after changing to a Vibrant divided gasket it made no difference the thing still spools really late. any thoughts here or personal experience?
the airflow numbers are under inflated because the Boost set is low, so i probably need to lean out the global some more to get that to match, but I'm more worried about how i can get this thing to spool quicker, or if i should look into a smaller TS t4 housing like the 1.00AR or even the .84 AR
first log is a 3rd gear, second log is a little bit of 1,2 and then the 3rd
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