tglems

iTrader: (3)

Got in touch with BYT, looks like we'll start the install tomorrow evening. Tuning will happen sometime around Fri/Sat-ish

Wait what? You had a synapse kit (gt2871 and manifold and downpipe) and took it off and put the stock manifold and stock DP back on and then put on the bnr 2871?

Color me confused. Was this a spool issue with the synapse kit? Or some other issue with the synapse kit that made you want to get rid of it? Something wrong with the manifold?

turbo_chevy_cobalt

well when racing from dig the shift into second had me waiting a little for boost and i wasnt liking that. so i changed it to the bnr. its a lot better now. other kit sold already lol.

beast10007

wow sweet well can you tell us a little more about this turbo? like spool time and how it hold through out the power band?

Stamina

Nice!

A GT2871 with a stock-ish spool up? That's awesome!

turbo_chevy_cobalt

When I get tuned I will let u know but tglems might be tuned before me

cubaniche

iTrader: (1)

WOW Thats awesome man. Great to hear that someone has it on the car already. Awaiting more info before and after the tune

CMVsst2010

iTrader: (2)

^^^ yeah for sure! i cant wait for results. although the spool is stockish..im not going to lie i kinda wish it would spool a little bit later just so the tires have a chance of getting a little grip haha. cant wait to get this done on my car in the future

pbass

Thanks! Hey man, I'm a total virgin to turbo mods, anything else I should know?

FF_ace

well we have the BNR stage 2 turbo bolted up with the coolant and oil line connected to tgelms car. will finish bolting everything else on tomorrow

tglems

iTrader: (3)

Yeah, time for bed now...tomorrow should be a good day tho!

edit: in case you are curious...

PrincessTurbo

Nice ! Good luck.

BYT*SS*TURBO

iTrader: (6)

I like it

pbass

Well I don't want the fastest car on the block, which realistically I'm not gonna get outta a Cobalt anyway. What I want is the sneakiest car on the block. That's what gets me through thick traffic quickly. And I want to do it as smoothly as I can. There's no organization or formality to it, but no one who commutes in thick traffic will deny that DD is some very competitive driving.

So far all I have is the GMS1, Injen CAI, Injen hotside. This is working for me right now. It is getting me to work in 10 min in traffic vs the 15 it used to take me in the Hyundai beater (it wouldn't have been so bad, but every driver on the road wanted to cut off the Hyundai, just so they could say they weren't driving the worst car on the road).

For DD I think I want the Stage 1 and a tune and nothing else. I love the stock exhaust because it's so quiet. But I don't know how the stock exhaust will play with the new turbo. Hoping it will leave me with a broader DD-style powerband than a more tuned exhaust, even if less peak HP. Any thoughts?

cubaniche

iTrader: (1)

This is great that we are finally getting good updates on these turbos. THe housing is a lot larger on that 2871 lol Excellent work guys!

I think this is exactly what you will get. Exhaust upgrades on the T/C are a little more aesthetic than anything else. Although you probably would free up some peak HP with a larger exhaust on the bigger turbo. If keeping the stock exhaust seems good to you then Id at least get a catless or hi-flow catted downpipe, because it is restrictive. Especially going bigger turbo.

FF_ace

its pretty much and simple install besides having to flip one coolant line and bending it a lil to fit and having to bend the top oil line a lil

BYT*SS*TURBO

iTrader: (6)

Did they reuse a stock TC Turbine Housing or remake their own? (Sorry, I didnt read thru the whole thread I admit.)

Any pics of the inlet of the Turbine Housing? Just curious if some porting there and on the manifold would be beneficial!

pbass

This is very good news for a Neanderthal like me that can't figure out any of the tools in the toolbox except the hammer.

FF_ace

talking about the exhaust side? i didnt take any pics tyler might have some but its stock even has the crack on the divider like all stock k04 housing get

FF_ace

uuhh you might want to get help from someone when you do yours lol. ive dropped the turbo out of my car a couple time once to install the dejon 5457 turbo kit i got ride of that and put the stock one back in then again when i built my motor

Stamina

Yeah, as you go up in power, the restriction usually becomes the turbine/housing in a turbo car. That's part of why turbo cars can have a large exhaust installed on them and don't have to worry about lack of backpressure, for instance, since it already comes from the turbo's exhaust side. Most turbo cars will have their peak HP directly affected by any turbine / housing A/R restrictions. There's a balance between peak HP and response though.

Since K04 to GT2871 is a good step up in flow, we may start finding that the stock turbine side or the downpipe/catback becomes a restriction.

FF_ace

about 3 inches. he has the dejon ic piping that has that lil elbow that comes off the turbo so that should help but we will find out here in a lil bit

Stamina

Word is that they reused the stock exhaust side and machined it to fit the wheel as well as improve flow (possibly ported already?).

BYT*SS*TURBO

iTrader: (6)

Ok cool, thanks!

sundevil07

iTrader: (1)

Yeah and that heat shield that made us all blood donors

FF_ace

Ya eff that thing its not going back on lol