BoostdR

Just did some analysts on the logs. Having proper gate control makes a considerable difference. Should be better still with a new wastegate can with stiffer spring. 1st gear 4000 4250 4500 4750 Gate no line 9.7 12.6 16.5 21.2 Gate w line 3.3 5.4 11.9 19.2

Yep the afm thermistor. I have it on the intercooler outlet now. So I worked out how to get it to launch. It's the wastegate. It opens up when hot by itself. Probably because of the bigger puck. No line connected boost is 14psi in first. No line connected also lets me get it up on stall and improves much needed response. So Scotty! The waste gate spring mod you do is exactly what these big puck jobbies need. I'm going to mod my Borg Warner EFR can or get another one from Tao since he already offered. Opens at 3250 with line connected and Opens at 3500 without any boost line connected

Yup. So I haven't been able to get the car to do it again. Seems the timing gets massively controlled (cams too) when Intake temps get over 45degrees. So I'm moving the temp sensor to the inter cooler pipe since I'm running a MAP sensor only it should be more relevant

Thanks to Scotty for the how to on getting my car to stall up off the line. I can now get a little chirp rather than mountains of lag now. Takes a laughable 10-18seconds but gets to about 11-12.6psi on bp98 now. I might look at the antilag function of the EMU again to bring the stallup time down. Matt

Holds 23psi as per my logs ok. Does drop boost off quicker also due to the bigger port

33GTR BOV. Softer spring. No stutter, seems to hold boost ok. Much bigger discharge port. MAFLESS tune http://www.youtube.com/watch?v=kM79IziIY2U I'll do some logging on the way to work to check boost levels.

The HKS GTRS is a mismatched turbo. The turbine is too small. The 3071 should theoretically be better.

Oh ok roger that. Sorry

Hang on, are you having a go at me??

Tao is quite determined to make up for the previous lack of on car evaluation. We should see some new products coming soon which is all good for us M35 owners.. "how we react after we have made a mistake defines who we are" yes it got a bit messy while the facts were coming out but we are all flawed in some way. I'm not one to hold a grudge if the offender is willing to make good.

it all becomes clear. I did note a fair clearance on the comp wheel side...as you say for end float compensation. Yes speed input is required. I used the yellow wire with black trace from the TCU(it's close to center). EMU settings: 16 pulse and 32% correction factor.

In that case 10psi on the stock convertor (2200-2300rpm?) is a huge improvement over my 2psi. I would expect launch control/ignition retard would work also since 10psi is already in the spool zone. Onto a good thing there. Is it ball bearing? Looks like a KTS billet compressor wheel which responds better than the GTX copy billet wheels from what I have tested due to the slim root(lighter, larger blade area per wheel diameter), extended tips(more flow for minimal rotational mass increase), thin blade(lighter, higher efficiency) and high blade design(blade area increase). Matt

That's a 3000rpm convertor?

interesting how many posts are being deleted from this thread...

The inlet track to the turbine is opened up all the way around. It even injects air under the turbine by about 40% Do you think this is why I have 20psi at 4700rpm and when running 25psi it goes from 25 at 4850 to 18psi at 6500..

I was referring to a bigger disc vs OEM. Here is the porting on my Hypergear The bigger problem with the M35 high flow is not boost creep but response. Is this unit ball bearing? I prefer the turbine style of the unit on the right in the video its a more efficient design. I expect it would make more average power over the unit on the left which looks similar specs to my Hypergear rev4. Lakes101 pic shows a different turbine again if I can see it correctly which is a good design(curved)

Should help with the bigger diameter disc

Looking at fitting a supercharger with electronic bypass to my ss4 rev4. Bit of a mission to fit but...

I do like the fast update and close proximity to the turbo it enables me to trim the acceleration enrichment easily. I also expect this is why the EMU auto tune function works well as the EMU software doesn't allow for a delay vs load setting like other auto tune ecu's(MOTEC etc). pretty sure the turbine does a good job at mixing the gas Heat wise yes I agree, prob a couple of hundred degrees extra

Preferably a type E EMU. I have a type D running ok but I did have to fix a design issue where an IC got knocked off the board. Do you mean MAP sensor? I use the greddy 3bar and a water temp sensor from a ce lancer. Auto tune is setup with an innovate lc2 wideband which also simulates the OEM narrow band so I can use the standard sensor position in the turbo dump pipe whilst the OEM ecu still runs closed loop at low load.

Boost isn't a indication of flow, since part throttle going up a hill will most likely have the BOV slightly open the AFM output can spike(I agree it prob won't goto 5v). I don't know enough about the ecu OEM mapping to have another theory. However I suspect the ecu calculates Rpm vs AFM vs tps for fuel cut. So 2500rpm with 15% tps and 4psi may be a cut trigger. My turbo is laggy so it probably doesn't trigger the same cut point your does. Wiring the Greddy ultimate in yourself is a real pain and easy to get wrong (took a while for me to get right with Scotty's help and I'm an engineer ;-)) patch loom would be worth the $ he also knows how to stop the ignition coil fault CEL from coming up. Good to know about the OEM map causing cut at 21psi as I'll be there soon. Do you block the line to get past it or change the scaling with a different sensor?

Opps this goes with the pic above. Cut and pasted description "They are capable of handling an infinitely wider range of boost pressure, more reliably, than the OEM style actuators" I should mention I feel Scotty's spring mod on the OEM gate to be a better option than a shorter rod to the canister since it is likely the canister has a non tapered spring.

I think you may be focused on external gates. I agree a bigger surface area puck requires more force. I absolutely disagree that no good wastegates canisters use a progressive spring. In fact the best turbo in the world(IMO) use exactly that. Borg Warner EFR and with adjustable preload. They work so well, external gate is not required in most applications.

Lol, trifecta

You must have disabled factory boost solenoid, have a free flow intake or exhaust that is causing it to go outside factory parameters.