New stillen sc kit no boost.
 

Hi guys,

I've been reading these forums for a while but haven't really posted much.

Just installed the stillen sc kit on my 2013 Z manual base+sports package. The install went pretty well and I didn't have any major issues. However, i don't think I am making much(if any) boost. I don't think it is a serious problem since the car seems to be running fine. No crazy noises, starts up right away and idles/drives without indicating that anything is dangerously out of whack.. I just didn't notice much of a difference than pre SC. I mean it's a bit peppier and pulls harder... But no where near what I would have thought. I know people complain about the stock stillen tune but even if it was just a 50hp gain I think I would have immediately felt the difference . The only engine mods before were gen 3 intakes and topspeed cat back. My guess is that there is some sort of vacuum/boost leak.

The only real diagnostic tool I have is the torque app for android that connects to the OBDII port via Bluetooth. It's not a wide band AFR gauge, but it is not running lean. It can also read manifold pressure and can "calculate" boost pressure from this. I know this isn't an accurate reading of boost pressure, but it was dead on for my GTI and brother's STi. This was giving me a reading of 1.2 psi..... Which seems like it would make sense with the slight performance increase I noticed. Makes me think the bypass valve isn't operating correctly/opening too early.

Has anyone had any issues like this?


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You need a real boost and afr gauge. It does sound like you've got a stuck valve or boost leak.

New stillen sc kit no boost.
 

Thanks. Yeah I know those would be ideal. I'm schedule for a tune/diagnostics at PTuning On May 1st. Do you think there would be serious risk in driving it as is?

As many cars as have lost motors with stillen kits and their godawful tune, I'd sideline it until you can get a decent time on it.

Seriously you guys need appointments for tuners ? :D
Thats umm weird to me haha

I second what Chuck says, You NEED those gauges.
Good Luck OP

Haha yep.. Hopefully it will be sorted out soon


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Stillen Kit is pathetic. That kit has killed more motors than anything.

Guys dont scare OP in to getting a GTM tt/sc kit, by telling him stillen destroys engines.


P.S. stillen is ok, but you have to get a custom tune, its a must.

New stillen sc kit no boost.
 

The kit will be fine, you just have to get a good tune and not try and push the kit beyond what it's designed for. The failures occur when people push for more power.

Yeah I'm not chasing crazy numbers. I just want something "reliable" and it seems that people on this forum who don't push it with pulleys and impeller upgrades are able to run it for several thousand miles without popping the motor


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Pretty much my answers have been said , You NEED a custom tune for sure , and the guages are a must, I would honesy check the BPV did you install the kit? I've seen a few guys install the BPV upside down :/. And just for thoughts I made 300 WHP ith my bolt ins and only made 342 WHP on Stillens tune. Custom netted my 412 WHP. And listen to chuck don't mod the SC at all.

New stillen sc kit no boost.
 

Yes I installed the kit. Bpv is not upside down(I checked). And the piping for the bpv came pre assembled from stillen and there is only one way for it to go on between the inlet pipe and charge pipe.

Agreed gauges are a must. Coming soon along with a tune. Drove it again today. Definitely is faster than before. Maybe I'm just not happy with my $7k 42 hp gain haha


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My car sucked on the canned tune because it was way rich. It will come to life with a good tune.


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Thanks for the replies. Feeling a bit better. I'll keep you guys posted for the results of the tune/dyno. I just hope it's ready for the tail of the dragon on May 9th!


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^ We are having a dyno day next week in MD.. Tuning a turbo 370z you should try and stop by.. Will be @ Pure Automotive. I can send you the details if your interested

Will be using EcuTek