Yeah I dont know about that 450 claim on that WR-2. Seems pretty lofty for a bored out k04. And the price tag is WAY too high to justify that turbo purchase in my mind.

2871 all the way or the ZFR when available is all I have to say.

 

yeah, as far as power and price, i'm really thinking the Hahn super 20g is the way to go if you dont want more than 425whp...$1100 turbo, and thats really it...

 

so, ive decided after going back and forth on ideas and what i wanted outta my car, and what comes along with certain power levels, i have decided on the hahn super 20g setup with the hahn piping/bov. For less than 1500, i will be at the power level i wanna be at, plus i can sell my stock turbo/forge bpv and zzp charge pipe, so i will only be outta pocket around $1000 other than the money im gonna give my tuner for doing another tune for me...wish me luck, and i will post numbers on here in the next month or 2 when everything is done....

 

Let me know how the ordering process goes with Hahn.

So you don't need a manifold with the Hahn? Does it also hook up to any aftermarket piping or just the hahn stuff?

and it has a internal wastegate?

 

ive been emailing back and forth all day. they are only about an hour north of me, so that is a plus as well.
There is no manifold needed, just the turbo kit $1100, aftermarket charge piping/bov and thats it, and a tune obviously. They said with full bolt-ons and Terms tune i would be over 400whp/400wtq @ 26psi on 93 gas.....im in, plus James already did a review on it and liked it a lot, so im sold...lol

 

Oh, and i talked to my tuner and he advised me to get upgraded valve springs...any thoughts on that people?...lol

 

zzp has their own springs and supertech springs as well.

 

He wants to rev you higher. This is where Hahn is saying you'll get more then 400wh it's a 650cfm turbo . So power to te crank is roughly 440ish-480ish depending on health of engine. and this is pushing the turbo and you will need some time of octane boost or ethanol. So Getting the 400whp is fine just takes a lot of tuning work . The surge limit and the choke is very shitty I'll say but great turbo

 

can you clarify a little bit man? on your review it looked like 26psi was max on our stock fuel system? im at 16* of timing right now with 93 gas, and my motor is very healthy @ 45k miles...sounds like the problem to getting my goal is the tune, not necessarily the turbo?

 

No its not going to be just the tune. Its the fueling that plays a part as well. If you're going to stay on 93oct then your fuel system will be fine but your timing will be limited, limiting the power you make through the RPM's(Due to Knock or Pre-detonation). Bring some Ethanol in the mix and you'll be able to run more timing(Due to the fuel diminishing but not eliminating) less knock. At the same time though(Double edged sword) you will now be maxing out your fuel system due to the engine needing up to 30% more fuel. You could get Cams for the purpose of stroking the fuel pump for up to 10% more to help out.

As for the springs, the reason Term is asking you is cause we learned together what happens when you get the cams in and leave the stock springs. 1.) your more prone to floating a valve 2.) You can't rev as high 3.) You are likely to have either a lash adjuster or Rocker fail. I learn this when I left stock springs in and had a lash adjuster break off on cylinder #3. I then(even though I had them but not installed them) installed the SuperTech springs enabling me to rev higher to help the turbo with some more room(if it make power in RPM passed stock redline). The S20G from hahn will definately make power up top.

 

i figured so 40rty...thanks for the confirmation...guess i should get the lash adjusters as well as the springs since im in there...

 

Well, do you mean get lash adjusters like aftermarket one? If that is so then bro you're going to be paying a pretty penny for those. Bates Engineering has the cheapest at $1200 while some other company that I researched from FL has some stout ones for $2400. The stock adjusters will be fine, its just the springs that need to be replaced is all. Preventing float will prevent a lash adjuster from failing causing the rocker to come off as well. Just get the SuperTechs from ZZP($349+shipping) and you should be golden. Are you going to get cams as well? You going to stick with 93 or go ehthanol?

 

here in sarasota florida there isnt a station with E, so i will stay at 93, and no cams

 

i love the way the charge-pipes/intake/ and bov look in this guys engine bay..i wanna do white with black stickers!!!!

My 2009 Cobalt SS/TC (Full Bolt-Ons) | Let's Talk About Cars

 

The turbo only flows so much air so obtaining power is not difficult but requires the boost and timing. My graph showed 26 spike 24 steady. If I kept it 26 I would have received way more kr . Those numbers are just dyno numbers, that tune had 20* timing to it on 89/91 octane. So of course I knew id get kr which is why boost was ramped in slow and also rich ish

 

why not the 2871 ?

 

^^^ that is what I said to him. I bet the 2871 with an aggressive tune on 93 can definately meet his goal.

 

i thought the 2871 made the same top peak power as the s20g... but the power comes in sooner with the 2871 ??

 

to my knowledge, the peak power on the super 20g is about 25whp more, and same with the torque, and the they have the same spool and the 20g is a lot less expensive in the long run

 

well have to see how the new batch of BNR's do. supposedly the newest ones coming out can hold 30-32psi.

 

Lol. Unsure who told you that but up top no. The wheels are just changed. But they can push 30 fine but will drop. Efficiency is of course out of range but Fack it hahahahah.

 

****, holding 30-32psi on the 2871 will be hard. Not impossible but definately not over 6k at that psi.

 

lol. and you gave me crap for doing 29 psi on mine lol. doesnt hold either but like you said eff it! i like mah torkz!

and thats what teamss said or something. i may have read it wrong.

So what are the other upgrades coming from BNR aside from the new wheels? i know theres more.

 

Looks like the WR-2 makes pretty good power to me

93 oct, 23psi made 390/408 on a mustang dyno through a Kappa drivetrain:
New Product - WERKSracing WR-2 LNF Bolt On 450hp Turbocharger!!! - Pontiac Solstice Forum

Not bad

 

oh my.

WR2 dyno



well i am going to keep an eye on that too.