will a boost controller prevent boost spikes?
11-17-2007, 05:47 PM
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will a boost controller prevent boost spikes?
i'm upgrading the stock wastegate to the tial 38mm 1 bar, the shop i bought it from recommended a boost controller to prevent boost spikes... i thought only like a fuel cut off or custom chip would do that...
11-17-2007, 07:02 PM
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its often a trade of between boost spikes and WG creep a good pneumatic system will will fix spikes but electronic is easier (so you pay). you may find you don't need it after the WG uprade do you have a boost enhancer inline thing? if so just back it off 4 psi and your sorted .
you have had boost spikes as you often shut of the signal to the 6psi waste to get 15 or 17 psi so its tricky when to open the signal . but now your within 5 psi of your waste gate setting you should be able to set it up with out EBC the car does have a factory EBC and it's nice to leave it in charge of boost as it will cut it back when it pings there are a few ways to make the factory boost controller
work better.
the factory set up basicly throws a portion of the wastgate signal back in to the j boot so when a the car is runny say 11 psi 5 goes out the J boot and 6 goes to the waste gate so the way to make the boost go up is to put a restrictor in the WG line this way more goes out the J boot but with your 1 bar WG you will probably need a restrictor in the j boot line .
make sure they have a good understanding exactly how the factory EBC works
you have had boost spikes as you often shut of the signal to the 6psi waste to get 15 or 17 psi so its tricky when to open the signal . but now your within 5 psi of your waste gate setting you should be able to set it up with out EBC the car does have a factory EBC and it's nice to leave it in charge of boost as it will cut it back when it pings there are a few ways to make the factory boost controller
work better.
the factory set up basicly throws a portion of the wastgate signal back in to the j boot so when a the car is runny say 11 psi 5 goes out the J boot and 6 goes to the waste gate so the way to make the boost go up is to put a restrictor in the WG line this way more goes out the J boot but with your 1 bar WG you will probably need a restrictor in the j boot line .
make sure they have a good understanding exactly how the factory EBC works
11-17-2007, 09:00 PM
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its often a trade of between boost spikes and WG creep a good pneumatic system will will fix spikes but electronic is easier (so you pay). you may find you don't need it after the WG uprade do you have a boost enhancer inline thing? if so just back it off 4 psi and your sorted .
you have had boost spikes as you often shut of the signal to the 6psi waste to get 15 or 17 psi so its tricky when to open the signal . but now your within 5 psi of your waste gate setting you should be able to set it up with out EBC the car does have a factory EBC and it's nice to leave it in charge of boost as it will cut it back when it pings there are a few ways to make the factory boost controller
work better.
the factory set up basicly throws a portion of the wastgate signal back in to the j boot so when a the car is runny say 11 psi 5 goes out the J boot and 6 goes to the waste gate so the way to make the boost go up is to put a restrictor in the WG line this way more goes out the J boot but with your 1 bar WG you will probably need a restrictor in the j boot line .
make sure they have a good understanding exactly how the factory EBC works
you have had boost spikes as you often shut of the signal to the 6psi waste to get 15 or 17 psi so its tricky when to open the signal . but now your within 5 psi of your waste gate setting you should be able to set it up with out EBC the car does have a factory EBC and it's nice to leave it in charge of boost as it will cut it back when it pings there are a few ways to make the factory boost controller
work better.
the factory set up basicly throws a portion of the wastgate signal back in to the j boot so when a the car is runny say 11 psi 5 goes out the J boot and 6 goes to the waste gate so the way to make the boost go up is to put a restrictor in the WG line this way more goes out the J boot but with your 1 bar WG you will probably need a restrictor in the j boot line .
make sure they have a good understanding exactly how the factory EBC works
Very interesting, thanks!!
11-18-2007, 12:49 AM
#6
Rennlist Member
ive had no boost spikes with my Lindsey manual boost controller. I think if you have it hooked up correctly w/ a MBC meant for a Dual port wastegate you wont have a problem. Most ive seen that do have problems have a dual port style MBC hooked to a single port WG or vice versa.
i ditched the CV when i did mine as well - no need for two boost controllers fighting each other. I can set mine to 16psi and run it in cold or hot and its always withing 15.9-16.1 range- logged w/ zeitronix w/ a boost sensor.
i ditched the CV when i did mine as well - no need for two boost controllers fighting each other. I can set mine to 16psi and run it in cold or hot and its always withing 15.9-16.1 range- logged w/ zeitronix w/ a boost sensor.
