Alex_23

I?m having trouble hitting boost on my black top Sr. I?m also running really rich and cuts off around 3500 4K rpms (tryna hit boost)
Here?s a list of what I have on the motor.

Wiring specialties harness
*Rs Enthalpy Rom Tune
P2mcoilpacks
720cc injectors
CircuitSports fuel rail
Isr fuel pressure regulator
Cusco catch Can
AEM guages oil psi/ A-F Ratio/ turbo
Tomei exhaust mani
Tomei Turbo outlet
Z32 maf
T28 S14 turbo
255 walboro fuel pump

A little history about the motor:
I bought the swap off of my buddies buddy about 2 years ago, everything was working fine when he had it running ,no issues at all, so. I had the swap sitting for about a year then I put it into my chassis and I?m having trouble hitting boost like I said.. the motor starts up everything is good , I just can?t hit boost cuts off like I said .. I swapped out the maf to another z32 one and still the same thing , I?ll try and clean them both tmrw.. any pointers ? Ty

NukeKS14

Have you done a boost leak test?

S14rebuild

Sounds like a boost leak

tuzzio

Make sure someone didn't stuff a rag into the intercooler piping at all. Seen that happen too many times

Alex_23

Did a boost leak test today ..
Right of the bat a vacuum line wasn’t plugged lol..
I plugged it up and
I’m finally hitting boost but it’s still hesitating a bit at 4K, once I let off the throttle a bit then I step on it I’m able to hit boost. So maybe I’m still leaking somewhere

Ran out of time today, so tomorrow I’ll test it again & thoroughly check all the pipe couplings etc..
Thanks guys’.
Hopefully I’m able to clear that 4K cuttoff hiccup tmrw

S14rebuild

Check your spark plugs for shits and giggles as well

Alex_23

Did the boost leak test again Today
Everything is tight Nd no leaks!
BUT..
I can’t get into solid straight up boost lol
It’s cuts off at around 4Kish rpm, I let go of the throttle a bit then I step on it and boom boost!
ANY other things I should look out for??
Im going to spray the maf w cleaner see if it makes a difference..

NukeKS14

What did your plugs look like when you pulled them?

Have you checked your ecu for codes?

Have you checked base ignition timing?

Checked/verified tps voltage (not replaced it, actually checked that it is adjusted correctly)

Pull your dipstick. Is the oil thin or does it smell like fuel? If so I would replace it.

Id start there.

Alex_23

So I checked the sparkplugs & yeah they need replacing (going w BKR7E)
Found oil in cyl 1 , so I?m going to replace the tube seal gasket & valve cover.

Checked the oil does seem thinned out a bit , since I was running rich asf I?m just going to change that out too cuhs why not..

Checked the TPS voltage it?s good 4 volts open throttle

NukeKS14

Did you try pulling codes on the ecu?