Stillen supercharger long term reports

swiss370Z

It is only driven in nice weather ...
but then, on the swiss mountains

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/// ONE LAST RIDE /// R.I.P. FAIRLADY Z ///

V1H

Would appreciate some advice on the following, please:

Planning to get the Stillen SC kit in a few months but already purchased BERK HFCs and Stillen cermaic coated Headers very recently, and now don't know whether to install them or shipping them back to Z1.

I've been getting confusing advice as to whether the Header and HFCs will be good or bad for the SC kit.
Have heard Stillen strongly recommending against the headers (loss of psi and lean A/F), as well as, headers working well with the kit. And HFCs not being able to take the extra heat.
I am seeing some member here running header+HFC with the SC kit.

Any advice?

diego@vossen

My advice is keep stock headers and cats. I had HFC's and one cat blew after a few hundred miles. When I went back to stock cats per Stillen, I made more power also. A few other's I know personally also lost power when going from stock cats to ART pipes and went back again to stock cats to get the numbers back.

Check this out!

Who has a Stillen G37 Supercharger? Numbers, pics, vids! - Page 26 - MyG37

V1H

Thanks diego@vossen. Very enlightening and helpful indeed.
It just puzzles me why in the name on science would a better flowing/more efficient header/cat make the SC lose power.

Either way, I'll try to return/resell my brand new Headers and Berk HFCs.

V1H

Diego, did you experience the power loss on HFCs with the Stillen base tune or did u run a custom tune and still lost power over stock cats?

wifedrivenZ

Why could we not of talked about all the problem that can occur with headers and high flow cats 2 years ago? Well I guess I am ok since I have not had any problems since I have upgraded. I am curious if I change out my cats back to stock would I make more power?

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Stillen Exhaust, Stillen Supercharger, Stillen Oil cooler, Stillen Headers, Test pipes, 928 Impeller, 9 lbs pulley running 12lbs of boost, Custom tune from National Speed. 415WHP 345TQ

V1H

oh nice you've had no problems for 2 years with Stillen headers and HFC?
I guess u have a good custom tune? What HFCs you using?

I'm curious, wouldn't the Stillen base tune have included this tweak already? Unless, one would custom tune from scratch, that is. I'm asking coz I wanna custom tune "on top of " their (unlocked) base tune.
And anybody know why does our Z have a MAP when it uses MAF to meter air?

ANMVQ

My god man PLEASE tell me your not on their tune ! An I have no clue if their base tune has that tweek, I ran their tune for 1.5 days and then went custom tune. I had zero plans on driving the car on their tune. The can tune is HORRIABLE, I have said it before and will say it again I made a WHOPPING 42 WHP with the SC and their tune, Custom tune netted me 112 WHP gain.

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

ANMVQ

Agree with Diego send them back to Z1 and use the extra funds torwards the SC kit. An Stillen will tell you themselves also to not use HFC's or headers with their SC.

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,