What External wastegate and downpipe to buy?
- Thread starter quadzila
- Start date
Yes Vic that would be great.
I will be using a Hyper-Gate 45 on its way...that has a 14 psi spring on a 3'' downpipe and using co2 . I am not sure which boost strategy to use. Any input would be greatly appreciated.
My goal: I plan on running up to 30 pounds of boost while at the track on race gas wth stage right trans brake and xfi 2 step I also would like better control on the street electronically and would like to use the fast boost controller to ramp up the boost slower on the street.
My goal: I plan on running up to 30 pounds of boost while at the track on race gas wth stage right trans brake and xfi 2 step I also would like better control on the street electronically and would like to use the fast boost controller to ramp up the boost slower on the street.
Here is the GN1 3'' downpipe with the Chinese gate cut off and a turbosmart hypergate 45 installed. I am also going to use the leash boost control system and just figuring out where to mount everything.
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Update: tested the combo with the gn1 3'' downpipe with the 45 mm' hypergate and im having trouble getting the boost to go lower than 22psi. I had 10 lb spring that net 25 psi of boost then the 7 lb spring net 22 psi. I am wondering if anybody has had this issue and how to fix it??
What are you trying to do? Sounds like you're possibly trying to operate outside the useful mass flow range with this combo. In post #19 i rec'd a 50mm if you weren't going to be using the turbo in a favorable mass flow range. A 45mm hypergate is plenty for a fairly wide range of control on almost everything. The gate would work better if plumbed further down into the header. 22psi on a 5800rpm 250ci is about 65lbs/min typically if everything is right. Trying to operate below that if use a different turbo. Did you open the bypass hole in the flange up?
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I am trying to run on the street about 18-20 psi and control the boost ramp with leash boost controller so i dont spin the tires. (Not installed yet) but wanted to test the gate manually ....I thought that a 10 lb spring would net 10 psi or close but its not it is 22 7ln spring -25 with 10lb spring psi so im thinking my bright idea to modify a gn1 pipe for a hypergate 45mm wasn't a good idea or maybe the inlet and outlet piping is to small no bypassing enough exhaust hence the high boost level. the small exhaust hole was slightly enlarged and I was able to run 16 psi with my internal wastegate with 1 5/8 puck before and had boost as high as 26-27lbs at the track. i did not open the small hole in the gn1 downpipe.
I doubt there's enough room to do it without removing.
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I finally ported the hole to the size of the downpipe and now i can get the boost as low as 15psi. I also had great results from the leash boost controller with c02 managing the boost. I can really fine tune how fast or slow i can ramp in the boost. Great for the street.
