So just ordered my Stillen SC

ANMVQ

Not really anything with the kit "if" you only looking for 450WHP. I personally don't like the heat exchanger bolted to the radiator. You guys should really look at what I did and the hand full of guys here and followed me and used a front mount heat exchanger, there is plenty of room. The other issue is our MAF's( Voltage will max out) Myself and Cliff ran into this issue but again that's if your looking 470ish . I had your Impeller upgrade and UPREV MAF's an was pushing 457WHP and the kit held up fine!! How ever on the other side of that was the sh&t install I had of the fuel pump.

I also had injectors and DW300 pump. I had the pump only cause the dealer killed the wally, and injectors were just incase I reached 500WHP, Which you wont see unless you have a built block.. Boost will be to high to get there on the the stocker, My 457WHP was at 11-12 PSI. You need like 16 to get to 500WHP.

To make 450WHP on your kit you would probably need nothing other than the front mount heat exchanger. ..

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

gussyturbo z

Hey bud did you have the 9lb pulley and the upgraded impeller? Im thinking of doing the impeller next.

ANMVQ

Hey , I did not . I would have seen too much boost on a stock block. With the 9lbs pully I would been 13-14 PSI . At the time my tuner told me that would be too much on the st ok bottom end. I do know I snapped a rod at 11-12 PSI but there other issues. What PSI AND WHP you at now? I really wouldn't go 12+. But that's just me. Even if I don't go back to Stillen ( really want to) but tossing some ideas about FI twins and AAM twins. If went that route is be at 6-7PSI at the most. If I go Stillen I'm not changin the boost just the heat exchanger again. I can live with 400+ WHP I think ;/

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

Z&I

MIKEY !!!

Were you on the COG pulleys at this time ??? Other issues ???

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ANMVQ

Hey BOB! Negative man, The dealer screwed those up too bent sh^t and what not. But I think it was better cause I would have gotten ZERO days of driving it before it popped, at least I got 3 days out of it. :/

Trying to get another SC kit , with No heat exchanger or tuning, . Just the kit and a trans cooler, that's all I need. Along with a place it install it

I don't even o to that dealer for oil changes LOL, I wouldn't let them plug a tire on my car. probably for get to bolt the wheel back on or break a stud ;/

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

Z&I

I did exactly this ... wanted to make 500whp.

Upgraded the Vortech Impeller to SI trim and used the Stillen 9 lb pulley ...
It produced 483 whp/ 378 tqe at 11.9 psi.

Grenaded the stock motor as a result, and now I am having to rebuild it.
(Should have built the motor in the first place, it would have saved me time, money, and grief).

Can't say for sure if your stock motor will hold up, but I definitely wouldn't do both the impeller and pulley at the same time...

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gussyturbo z

Do you guys think that the test pipes could cause a little loss of hp? I had cats on it and it seems like it's a little sluggish at times. I'm thinking about going back to cats. Plus the fire balls were pretty cool.

Z&I

Hard to say what is going on with your car without looking at the dyno sheet or test driving it ...
It could be almost anything.

But any time you change or alter something in the power train you are going to affect everything else as well.

Your car might benefit by the back pressure caused by the cats.

I had PPE long tube headers with no cats on my car ...
That combo created an easier exhaust flow with a smoother scavange, but at the cost of increased loudness, emission odors, and perhaps a little drop in torque.

With the tune - my car did have a pretty flat torque curve which all but eliminated the flat spots during acceleration.

Hope this helps...

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gussyturbo z

Thanks man! I guess I will try some HFC. Recommend any? I have the AAM 3" exhaust that helped a lot. When I changed the HFC to test pipes it felt different .