I just bought the kit for my GSR. Now, I can't use the FMU that came with the kit due to ODBII to ODBI issues. So I got a P28 chipped for hondata and a Hondata S200 fuel management unit to run it. All I am wondering is how much is the greddy wastegate going to run boost wise so I can tune my hondata correctly. I have heard 5psi and 7.8psi. So would soeone let me in on how much it is doing without the FMU from greddy. Thanks.

 

if i remember right i think its 6.5 psi.

i know the g35/350z twin kit runs 5.5psi

i dont think greddy would do 7.8....the kit is carb legal (amazing) but the power increase is average compared to other kits form what i researched....so 7.8 seems a little off...i think its 6.5

 

Thanks. I have been trying to get a hold of Greddy, but they are a pain in the *** to get a hold of to get any information. Again, thanks for your help.

 

I've had the same kit for about 8 months now. if you don't reomve the restrictor plate behind the air filter it should be about 6-7 psi. with the plate removed it spikes to almost 9.5 psi... mine was about 7.5 psi with the plate and 9 psi without... psi would drop abit on the top end... not sure why????? hope this helps

 

Thanks, I guess that I am going to tune it as if it was running 7psi and take it out and see what the boost gauge says. Thanks for your help.