Just finished up my holset install, few questions.

[onefast2gdsm]

My setup includes a holset hx35w 7 blade, tial 44mm vband wastegate, 3" open downpipe. My wastegate spring is 8 or 9 psi and i have been running wastegate pressure to make sure everything is ok before i up the boost. I have 650cc injectors, yes i know theyre small and i plan to upgrade them in the near future. How much boost can i safely run with them on this turbo with the 650s? I am also wondering if my wastegate is setup correctly, i have 2 ports and the top port is not connected to anything. Last but not least i have a rigged oil return line that is 3/4 hose on a an fitting flange on the turbo. It works, but i got a stainless line that was too long and i had to rig something up. Where can i find a good return line setup that wont break the bank?

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[bastarddsm]

you can probably get to 15psi on those 650's just see what your idc is. I'm brave and let mine run out to 100%, but it's my car.

 

[bradselph]

you can probably get to 15psi on those 650's just see what your idc is. I'm brave and let mine run out to 100%, but it's my car.

same here

i was able to get about 18psi before i hit 80% idc on 650s

 

[onefast2gdsm]

Thats a lot more than i expected. Is 15-18 psi even worth it though? I dont know when ill be able to upgrade my injectors but i hope to do it soon.

 

[92AWDHX40]

Keep the boost low watch your wideband to monitor your air fuel ratios.

 

[bradselph]

You may max the injectors out at around 20psi depending on how well your setup flows.

you cold push 30 psi if your turbo only moved 30 lb/m of air

but your turbo should move a little over 50 lb/m

depending on what air fuel ratio and rpm your targeting the 650s could be all you need. you need to check the idc to be certain though.

 

[crash89]

I ran WG pressure (10 psi) on my Holset for a few weeks.. I thought it felt pretty good.. ... UNTIL I upped the boost!! anything under 20 psi. As soon as I made that one adjustment to get over 20psi it started pulling like a banshee. You might be able to get 20 out of it.. Just make sure your IDCs are getting logged and watch them.

 

[ibreakmytsi]

I run 780's and see 90% duty cycle at 28 psi on pump gas. And I bought the garret journal bearing MAP perfomance oil return push lock kit. And I love it. Looks good and easy install.

 

[Dert]

I would assume you have something to tune with if you have swapped injectors and upgraded turbo??? Just keep an eye on your idc's, keep em around 70%. I'm around 25psi and 71% on my PTE 6235r, flowing around 50lbs/min on my FIC 650's on 94oct pump gas.

 

[evokid1390]

Just watch the air fuels and start saving for bigger injectors so u can really have some fun