Jump to content
SAU Community

Recommended Posts

Also kasko, that result you were comparing your car to could be on a hub dyno and i think birds' result could have been a hub dyno as well, so keep that in mind.

The only true comparison would be to get the all on the same dyno. I wouldn't be worried too much about it to be honest

Edited by Mitcho_7

Bird's result was from an roller dyno and so's Peters. could be the tuner is conservative, different dyno, differences in the exhaust, cooler, or what ever it might be. Since my car's off the road I'll organize photos post up some progresses of the Turbocharged Kia sportage with high roll over risk project that we are half way through for bit of laughter.

just a quick question are do you guys use bellmouth or split front pipes?

This is my justification, if split dumps produced more power and better boost response, why would manufacturers produce bell mouth dumps?

Bellmouth = bigger = more flow.

Pretty simple. Sick of all this merging the gasses bullshit, either go bellmouth or man up and go the external gate. :)

Bellmouth = bigger = more flow.

Pretty simple. Sick of all this merging the gasses bullshit, either go bellmouth or man up and go the external gate. :)

Or both!? :woot:

Most splits are shit and cause more problems than they solve with wastegates jamming etc. Even if you get one to work properly it's purely a wank factor thing; imitation screamer pipe that sounds like ass. Bellmouth = don't look back.

My 258rwkw was on a roller dyno at Race Pace who certainly aren't known for having a happy dyno.

Peter's full boost at 3250 got me confused though...mine happens at around 3600-3700. I have a more restrictive setup with my catted exhaust and lack of a 3 inch metal intake, but I wouldn't think the response difference would be that great...unless you have an updated SS1PU? :S

Most splits are shit and cause more problems than they solve with wastegates jamming etc. Even if you get one to work properly it's purely a wank factor thing; imitation screamer pipe that sounds like ass. Bellmouth = don't look back.

Not all split dumps are vent to atmo.

cheers guys, ive had my car for about 8 months now and have done suspension etc so just starting to look at adding power, amperformance here in sa do very impressive looking split front pipes and was looking at getting one but he makes them in such a way that i dont think they would work with the hiflow which lead me to wonder if anyone was running one. will look into it more but atleast you guys have given me insight into which front pipe i should be looking at. :)

intake pipe makes abit of differences to response. here's one more result from a customer's R34 skyline running SS1PU. made 255rwkws @ 16psi with 2psi creep mid range. This car's also runs a return flow cooler that get abit hot. With a proper cooler at 20psi it should be getting pretty close result as my test car.

There has been a recent FNT angle update, might affect tinny bit in response but not power wise.

power.jpg

boost.jpg

afr.jpg

intake pipe makes abit of differences to response. here's one more result from a customer's R34 skyline running SS1PU. made 255rwkws @ 16psi with 2psi creep mid range. This car's also runs a return flow cooler that get abit hot. With a proper cooler at 20psi it should be getting pretty close result as my test car.

There has been a recent FNT angle update, might affect tinny bit in response but not power wise.

power.jpg

boost.jpg

afr.jpg

When will the FNT update be available Stao? I've been waiting for your next development to order a turbo so this might be good enough to make my wallet a bit lighter :)

Here's the interesting part...despite my full boost not coming on until a bit later...my power band is basically the same as Peter's and the above customer's...I make the same power at the same RPM points?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • @joshuaho96 Hmm considering the drama you've seen/experienced, have you looked into getting a built complete long motor shipped from Australia?  Considering the AUD is basically monopoly money when compared to the USD, at a glance this seems like a good option?
    • Bloody Skylines, they put you through the bloody wringer! Stick at it! Stunning drag strip BTW! Where is it? Can see part of the name on the slip and probably should just Google it!
    • I mean the other day I had to walk someone through diagnosing why their timing belt was walking off the cam gears. At least one of the issues was a bent tensioner stud. Local mechanics have found runout on the CAS mechanism causing weird failures. I'm also no saint here I've documented some of the things I've had to learn the hard way. Something I discovered recently is that my CA emissions catalytic converters weren't even welded correctly to align the downpipe to the main cat and they tossed the support bracket that goes from the transfer case to the downpipe to support everything there. I spend a lot of time chasing down these decidedly unsexy problems and the net effect is it feels like I never actually get to the original objective (flex fuel, VCAM, oil control, cooling, etc).
    • At times with how you make everything sound, all I imagine Americans doing when they see a gtr is standing there looking at it and bashing it with a gun like how a caveman would with a club and hoping it fixes itself 
    • I think this is just a product of how the US market works for this stuff. Shops are expensive and there's no real way of knowing what kind of results you're going to get, people don't really have the institutional knowledge. I have heard too much at this point to really put faith in anybody "full service" except maybe DSport and they aren't really a full service kind of shop. If you go to the right place I have no doubt they'll get it right for you. Some locals have set it up right but the cost really is nuts and even now they're still fighting issues. And you know I'm a crazy person who thinks things like twin scroll, relatively short low-mount cast headers, PCV recirc to intake, recirculating BOV, right-sized for ~400 whp, MAF load, validating all of that to a standard comparable to OEM test programs, etc are relevant. For what it's worth, multiple local owners at this point have been stuck in a perpetual cycle of blowing a motor -> getting someone to rebuild it -> some missed detail causes the bearings to wipe and spin just outside of break-in mileage or drop valves or some other catastrophe -> cycle repeats. I usually only find out about this because I'm perpetually helping random friends with diagnosing car troubles, Skyline or otherwise. The single turbo stuff if I'm honest is mostly secondary, it just doesn't seem to achieve the numbers in the ~2000-3000 rpm region that I would expect given the results I've seen here or in Motive's videos. I don't really know what we're missing here in the US to be causing this. Lots of people like to emphasize the necessity of finishing the project first and foremost, but I'm not made of money and I can't afford to be trashing a 15k+ USD engine build with any regularity. Or spending my relatively limited garage time these days unable to triangulate problems because too much was changed all at once. Also, even if it isn't a catastrophic failure I would consider spending the cost of single turbo conversion with nothing to show for it to be pretty bad. 
×
×
  • Create New...