Today's mapping

[e30_Turbo]

Another one bites the dust!!

Looking good Alex, I had about 20 "issues" like that to sort on mine, little pissy anoying things, but each one figured kinda ups your motivation to get it done, which is handy.

I had a good chat with Lennie last night about my "boost spikes" and he's suggested my WG is too small to flow enough so I get spikes as it builds then blows out as the pressure grows bUT having sat and thought about it, my spikes are below peak, so I'm spiking down as in losing pressure, not spiking up I you would with a "restriction" issue. So guess what, still not sure!LOL!

Do you know anyone who knows about these things? I'm finding it very hard to find someone who actually knows about the tech stuff.

Mark.

[Turbo-Brown]

Wouldn't just be stiction in the pivot for the gate would it?

Not sure what could be done about it if it were though as they're not really dissassembleable from what I've seen.

[e30_Turbo]

Wouldn't just be stiction in the pivot for the gate would it?

Not sure what could be done about it if it were though as they're not really dissassembleable from what I've seen.

As I understand it the actual bore size is in question or my actuator is f'cked.

I doubt I can sort this out with this turbo, starting to look into external wg's and a screamer pipe, I know I can get a T70 (t4 size) for Ԛ£300 with no wg, so just a welder, money and another round of pulling it apart!

But if you do know anyone who knows lots about turbo's and flow rates etc, please let me know I need to learn

Mark.

[Andy335Touring]

Anyway, it's raining now so I'm gonna make that little adaptor thing

Cool, thanks !

[Turbo-Brown]

All done

Will pop it in the box with the gizmo and try and get it to the post office tomorrow

<hope it fits!>

[Andy335Touring]

Thanks again, i've just repied to your PM

[Turbo-Brown]

Went in the post yesterady morning

The little adaptor's in the box with the gizmo.

[Andy335Touring]

I got it this morning mate, thanks !

How tight is the fit between the two peices as i am going to see if i can close the slot up by tapping it with a hammer so i need to separate the two peices.

I took a litle vid clip of it, sorry it's so dark

http://homepage.ntlworld.com/a.law47/TB.AVI

[Turbo-Brown]

Aah, yeah got a bit carried away with the slitting saw when I made the slot so it's a bit more than 2mm. Sorry about that!

Could I suggest putting a bit of insulating tape over the flat bit to bulk it out a bit. It's just that I'm worried the brass might crack if it bends too far

The fit isn't all that tight between the two parts so some gentle tapping should get them apart

Glad you got it and that it <almost> fits!

[Demlotcrew]

He he funny vid ANdy, its putting me in a trance!

Whats the part?

Andrew

[Andy335Touring]

Thanks, i will try insulation tape before i get my lump hammer out !

[Andy335Touring]

He he funny vid ANdy, its putting me in a trance!

What ever floats your boat dude !

Whats the part?

Andrew

Look on the previous page of this thread

[Turbo-Brown]

Was kinda hoping that the spring tension in the throttle pot would take out any slack, but it probably is better for it to be a tight fit on reflection, otherwise it could jiggle around a bit.

[Andy335Touring]

Was kinda hoping that the spring tension in the throttle pot would take out any slack, but it probably is better for it to be a tight fit on reflection, otherwise it could jiggle around a bit.

I didn't know the TPS had a spring in it, i just thought as it's the only engine load sensor i've got for the ECU i'd best see if i can eliminate any play.

I will try your tape idea, should work a treat.

Have you had the chance to do any work on your car this week ? Mind, not that the weather is very nice for working out side this week

[Turbo-Brown]

Cool

Only really get a chance to work on it at the weekends as it's usually dark by the time I get in from work.

Gonna reconnect the lambda sensor this weekend so that I can have a go at getting it to idle without flooding. Hopefully it'll go alright with injectors that don't leak and a TPS that gives proper readings

[lentec]

So the spitting was a leakey injector?

[Turbo-Brown]

Yeah seemed to be, when it should've been closed, there was a fairly constant pissy dribble coming out of injector 5.

Got my fingers crossed that it might smooth out the idle a bit, find out on Saturday hopefully!

[Turbo-Brown]

Yay!

Minor result, the idle's now miles smoother with the replacement injector!

Rigged up the Lambda sensor again so I could have a play with the no load mapping, did a bit of a data log thing and it can now rev up to over 6k (gets there in about 1/2s too which is nice) get a little spike of boost as the revs build (was only blipping the throttle)

What I'm not sure of though is whether 1v on the lambda sensor is lean or rich.

Also coupled up the signal from another throttle to hopefully smooth things out for the servo and the gubbins like the dump valve and MAP sensor.

All good fun

[Andy335Touring]

Nice progress mate

Is it driveable now ?

I did some more logging on mine and got one of the chanels to show load sites like you said a week or so ago

[lentec]

1V is rich sensor max

[Turbo-Brown]

Didn't take it out for a drive in the end, was a bit worried (still) about the map as I've changed the whole thing!

Got the fuel from that VR6turbo map, got the ignition from the Pinto, took the accel enrichment from an Mi16 engine and so on.

Then started it up and immediately needed to take out a load of fuel as it was black smoking again.

Does seem much happier to run now though

Didn't bother configuring the outputs on the graph this time, but does it help having speed and load sites on the graph?

Anyway, sounds like the fuel was going in the right direction if 1v is rich so that's good news

Things were cut short though when not the neighbors, but their gardener started moaning at me!

[Andy335Touring]

Didn't bother configuring the outputs on the graph this time, but does it help having speed and load sites on the graph?

It will do once i start mapping properly after i've sorted out the unstable AFR plot.

http://img143.imageshack.us/img143/1249/log8rs.jpg

Sounds like you need another visit from Ant with his WBO2 now it's running OK ?

Are you getting good readings from your TPS and MAP ?

[Turbo-Brown]

Yeah, think (hope) it's pretty much ready to go now

The TPS seems to be working fine now, although the shaft it's mounted on now doesn't turn as far as the old one so the resolution isn't as good, and also the linkage is progressive so whilst it used to read throttle opening directly, it now reads a kind of curve of throttle opening.

The MAP sensor signal was a bit up and down as it's only fed from one cylinder so I've coupled the servo signal line into the signal to the MAP sensor to hopefully give a slightly more stable reading.

Anyway, it did register a mighty 0.2bar of boost when I gave it a blip yesterday so the turbos are presumably doing what they're supposed to

[Turbo-Brown]

HOLY FUCK!

I can not stop smiling!

We have hissing boost from about 2.8k and a massively satisfying shove in the back

What an unbelievable transformation! From lethargic slug this morning to hissing beast this afternoon. Haven't even used full throttle yet!

Got AFRs nicely in the 12-13 bracket on boost, and a nice stoic on cruise.

To say I'm chuffed is an understatement!

Just gotta run it in now and then get over to Emerald for a full map

Can't heap enough praise upon Ant who's pretty much single handedly transformed Brown into a working car! Cheers dude, you're the absolute MAN!

[Toby_Unna]

i've been waiting to hear this from you Alex

well done (and well done Ant too )

[e30_Turbo]

Well done Alex, just wait till it's a fully mapped!!

[Andy335Touring]

Cool !

I bet you can't wait to get it run in and mapped !

[Turbo-Brown]

Yay, just been out (and accidentally full bored it) and it's still making me smiley!

Anyhoo, me mate Stu recorded a little clip of the exhaust.

It's only really at idle I'm afraid with a coulple of tiny blips:

http://www.stuartmcguire.co.uk/gt6/bmw/ ... ipping.mp3

Probably have to download it or something, I have no idea about computers

[Andy335Touring]

Sounds nice, but......................


















...........we want some more footage of the beast in action !

[Andy335Touring]

What sort of boost level are you running at the mo ?

[Turbo-Brown]

Apparently it got up to just under 0.5bar with the very quick full throttle burst, but the actuators are set to 0.6bar ish

[Andy335Touring]

Apparently it got up to just under 0.5bar with the very quick full throttle burst, but the actuators are set to 0.6bar ish

Did you log the run ?

Did Ant use the Emeralds logging feature with his WBO2 when he was tweaking it ?

You need some new text for your sig pic now

[Turbo-Brown]

We did log the run, the the laptop died half way through, and the second log didn't get saved in the end.

We tried connecting the low voltage output on the WB to the normal lambda input, but it didn't give a proper reading on the live adjustments screen, so we tried to set the AUX2 input on the data logger to read the WB sensor (connected up to pin 35) but it didn't seem to like that either.

Will update me sing now

[Ant]

So as good on the second run then Alex.... good news fella !

I got home @ 9.37 last night, spent a few hours stuck on the M3 after a pile up ahead closed the fukker, all good though, car is docile as stock in traffic and never got over 3/4 temp

Good day, good company, good coffee ! bad tuning interface

[Turbo-Brown]

Blimey, how'd I only see that today!

What shitty traffic! At least your fan doesn't jam every once in a while ant!

Gonna give the car a service this weekend, just oil, filter and plugs.

Suspect that the idle's gonna creep up a bit as the oil in there's pretty thick with assembly lube. Hopefully will help cold starting though.

Will my 1p ebay fan turn up for the weekend though?!