Braineack

iTrader: (62)

define target. we are talking about wastegate so i don't understand what you mean by target.

ScottyP3821

iTrader: (2)

My boost target. It doesn't matter really. It happens just off of wg pressure as well. Example just off WG pressure I was hitting 1st-7psi 2nd-3rd 7 creeping to 10 psi 4th-7 creeping to 12 psi and 5th 7 creeping to 15psi. Now with my porting its at 1st -7psi 2nd- 7 psi 3rd -7-8 psi 4th 7psi creeps 9 psi and 5th 7 creeps to 10psi stays solid around 4800rpm.


According to what I have gathered from you and sixshooter. My WGA is bad.

With EBC most of the creep is gone cause Im running 14psi. I guess I am getting close to the desired flow path?

IMO if I just tuned it for 15-16psi I think the turbo wouldn't have any issues with creep or spiking. I just don't feel comfortable at that pressure. Id rather spike slightly in the low-mid range than hold that high of pressure through out the power band.

18psi

iTrader: (76)

so basically you just confirmed what me and shooter were saying.

and dont' get me wrong: you might have creep on your setup too (sounds like it), but you're confusing overshoot with creep which are two different symptoms caused by different operations

ScottyP3821

iTrader: (2)

English is my 1st language. that doesn't make me good at it.

ScottyP3821

iTrader: (2)

Would 16psi as far as pressure is concerned be a bad thing with this motor? As long as I stay under 250ftlbs on the stock bottom. Im tired of the creep. The spiking I figure I can nail down by changing the control interval

sixshooter

iTrader: (12)

My boost rises sharply to 15psi and then stays there.

Braineack

iTrader: (62)

so youre really talking about not being able to tune EBC correctly?

but if now that youre ported to only creep to 10psi, then why cant you tune to 10psi for EBC like I did in my dyno plots above?

aidandj

iTrader: (5)

<p></p><p>What's your step by step tuning method for EBC. I've tried a whole bunch of different ways and never gotten exactly what I wanted from it.</p>

18psi

iTrader: (76)

boost is a restriction of flow. you can run 10psi or 15psi , and as long as cyl pressures are in check your rods won't care

Schuyler

iTrader: (1)

<p></p><p>https://www.miataturbo.net/megasquir...2/#post1159598</p><p><img src="http://cimg7.ibsrv.net/gimg/www.miataturbo.net-vbulletin/1491x631/80-undefined_7aee74e138eaa538a71eb33b7de4b8b9e6fff7e2 .png" title="" /><br /><br />&nbsp;</p><p>&nbsp;</p>

aidandj

iTrader: (5)

<p>Lol, i've definitely read that before. Thanks for the reminder. I believe it has changed some in the latest betas though.</p>

ScottyP3821

iTrader: (2)

P is for gain or how quickly it gets there
I is to tune out ossolations or to help stay on target
D is for dampening the slight overshoot or ossolation once at target.

And by increase P I actually mean decrease it from 150

Rinse and repeat as I increases P might need to be increased as well.

This is how I have always tuned boost. Never had an issue on many different setups. Only this turbo

sonofthehill

iTrader: (1)

Nice and easy to change.



Here is how my port looks now. I will post another log soon.

Schuyler

iTrader: (1)

<p>My stage8s make me hate any time I have to pull the turbo. I just take off the whole manifold, and split the compressor housing depending on what I need to do. Taking the turbo off the manifold is always the last option I chose.</p>

ScottyP3821

iTrader: (2)

I hear that I have had to pull mine 3 times now.

sonofthehill

iTrader: (1)

New logs, increased the preload 1 full turn on the WGA now it opens around 8.2psi and I was able to get to 6000 rpm without hitting overboost which is set at 13psi. My max boost was about 11psi, if it doesn't creep past 12 or 13 by 6500 rpm I will leave the port alone.





I think this is 2nd and 3rd.






4th gear pull but I hesitated initially so it is kind of screwed


I will say this thing is "Bad ***!"
Thanks everyone for all the info and help.
Thanks Lars!

shuiend

iTrader: (24)

I am glad you are enjoying it. Hopefully we get a few of the others who have ordered them posting up how they like them. Also don't forget to take Nigelt out for a ride so he knows what he is missing out on.

Braineack

iTrader: (62)

sonofthehill needs to tune his accel enrichments better.

I'd still like someone, after porting, to remove the wastegate actuator from the wastegate, wire the wastegate open, then take a log to 7000RPM.

sonofthehill

iTrader: (1)

Yeah I bet there is some aluminum on my plugs from that lean spike, I just adjusted my AE some last night from that log.
I will wire my wastegate open and take a log for you Brain.
I was trying to get my EAE working before the kit showed up but I wasn't able to so my settings are a bit screwed. I am working on it, EAE sure would be nice with this thing.

sonofthehill

iTrader: (1)

I plan to have Nigel take me for a ride once I am sure it won't blow itself up. I want to see a few things live in tuner studio while I don't need to pay attention to driving.