couple rb prob"s need alittle insight

[preston240sx]

aight well first off this is my back up rb20 lol the first one is on the engine stand.... first off im noticing alittle oil dripping from the transmission shield i know its the rear main seal and i already and have that in the fixing my first question ties in the the second its seems after only one event and less then 1500 miles the clutch is slipping(new oem clutch) and wont hold the power never had that problem before ... my question is the oil i see on the transmission shield could that be causing the slippage with the clutch/flywheel or is that to far fetched ...also i had my car tuned im running a holset h1c 440cc gtr injectors emance tune came to my house for personal tune worked on it untill everything was running smooth . only problem i have is once in a while its hard to start .. and at stops or lights the car wants to die and stall out ... i dont think its a vacuum prob but its something im going to look into also look into a new oxy sensor ..even though my emance consult show its working anyway if anyone has had the same pro im trying to figure it out im thinking ima have to pull the transmission and i really didnt wanna but it will solve my leak issues i may do it next weeknd

[RustspecS13]

Sounds like the idle may need adjusted on the ecu or iacv its self.

Do you have a wideband display in car or some way to monitor it? The tune at idle may not be perfect, I'm not sure but I haven't heard good things about his tunes.

The clutch and oil could be related. Or the oem clutch may not be enough for your holset, as capable of far more then the stock clutch can handle, in addition to drift/track abuse. Solve your rear main leak and inspect the clutch.

I have a 300zx stage 2 clutch form dxd south bend and it can hold 400ft-lbs in a heavier Z it was $330 shipped and its an awesome clutch.

~Alex