begi and boost creep
#1
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begi and boost creep
so on the weekend, i installed the begi downpipe for my greddy kit.
now, i get some scary boost creep. it'll hit 6psi, then creep up from there to about 8 or 10psi.
i've only got the 1.6l injectors, so this can spell disaster.
anyone else get this?
ideas?
now, i get some scary boost creep. it'll hit 6psi, then creep up from there to about 8 or 10psi.
i've only got the 1.6l injectors, so this can spell disaster.
anyone else get this?
ideas?
#3
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that's a feature, not a problem. get yourself some injectors and/or a hp fuel pump and enjoy.
I have never heard of a boost creep problem with the greddy. It's always a boost droop. Perhaps some porting on the turbo's turbine out would get it flowing better. Where does your WG actuator reference boost signal?
I have never heard of a boost creep problem with the greddy. It's always a boost droop. Perhaps some porting on the turbo's turbine out would get it flowing better. Where does your WG actuator reference boost signal?
#4
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the wastegate has a vacuum line to the turbo housing.
do you recommend just the injectors? or will i need a fuel pump to go with the injectors?
and if so, which fuel pump? i was thinking about getting the 7MGENA supra injectors to be safe. but i'm no expert.
do you recommend just the injectors? or will i need a fuel pump to go with the injectors?
and if so, which fuel pump? i was thinking about getting the 7MGENA supra injectors to be safe. but i'm no expert.
#6
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yeah you'd probably be good with the 300cc injectors only. i'm thinking by the time your boost creeps, the ecu is at 90% duty cycle. be safe, get a wideband.
check to make sure that your actuator rod can move feely and the flapper door actually opens fully. like i said, I've never heard of creep on a greddy, only droop, and usually bad droop due to their shitty wg actuator.
check to make sure that your actuator rod can move feely and the flapper door actually opens fully. like i said, I've never heard of creep on a greddy, only droop, and usually bad droop due to their shitty wg actuator.
#8
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you get boost creep because the WG is too small to pass that much gas. it's more apparent on low-boost setups because less exhaust is going through the turbo and more is diverted through the WG.
if you dont want to change the fuel system, port the wastegate.
if you dont want to change the fuel system, port the wastegate.
#10
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If it is still connected to the WG canister it is *very* difficult to operate manually. For a device that's designed to actuate on only a few PSI, the diaphragm in that canister is surprisingly stiff. This is not indicative of a problem.
#12
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The only cure for boost creep is to port the wastegate.... well that or just turn up the boost...but yea
#14
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If you have a hand-operated vacuum pump which has a port on the exhaust, you can connect the outlet of the pump to the inlet of the WG canister and make enough pressure by hand to actuate the diaphragm.
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I would say if you have to ask, let a pro do it.
I have always wanted to do this:
http://www.gpopshop.com/portpolish.html
(minus the exterior polish that is)
I'd bet the gains are as worthwhile as they claim.
I have always wanted to do this:
http://www.gpopshop.com/portpolish.html
(minus the exterior polish that is)
I'd bet the gains are as worthwhile as they claim.
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