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> gt2860rs .64 rear housing overboost gen3 3s-gte, Fixed overboost (atleast so far)
post May 14, 2011 - 11:45 AM
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delusionz



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Any suggestions? I want to run 16psi, the included actuator should be 12psi but its spiking to 20psi alot faster than i can let off the throttle

am going to pull the downpipe off and test the actuator with a pump, maybe change from 5mm hose to 8mm hose? (Mr Garry's actuator nipple seems a little bigger than Mr CT's)

but has anyone seen this themselves and seen an effective fix short of going external?

if my actuator and door are operating as normal, will porting the gate do the trick? any special tricks?

This post has been edited by delusionz: May 24, 2011 - 12:18 AM


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Mike W
1996 Toyota Celica ST205 GT-FOUR
GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC
269awhp / 273ft-lbs
 
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post May 29, 2011 - 6:05 AM
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delusionz



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Nope.. done it again. I had a good trashing today, just once somewhere at the top of 3rd I don't know where I wasn't looking down but out of the corner of my eye I saw the boost gauge creep towards 1.2bars as fuel cut occured.

1.2 bar = 17.4045285 pounds per square inch

So it's nothing like before where at anywhere between 4000rpm - 6000rpm from 2nd gear onwards the gauge would snap to 1.4bars before abruptly cutting fuel.

This just happened once, so 2nd gear is holding to my boost setting of 1bar, but somewhere near the end of 3rd its still wandering off (depending on conditions) which means 4th gear will do it earlier (not that 4th gear matters, speed cut will set in around the same time as boost cut anyways)

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So if I want to continue on the stock ecu I have 2 options. A. ruin my nice merge collector on my T28 manifold with an external WG port, or B what size exhaust restrictor should I use and where should I place it? At the moment I have a 3" straight through free flowing system, no cats or mufflers, a 3" pipe squashes down to the EXACT same size as the T28 exit flange so theres no extra bits welded on as there was with the ct20b downpipe.


--------------------
Mike W
1996 Toyota Celica ST205 GT-FOUR
GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC
269awhp / 273ft-lbs

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