DanielW

iTrader: (27)

As many of you know I recently had an sts rear mount turbo kit installed on my 05 5AT Z. I wanted to get an elctronic boost controller for several reasons. First I have a defi boost gauge which is "supposed to be" top of the line. While the gauge itself is nice it tends to read a pound or so high which i don't like at all for obvious reasons. Another issue that I was encountering was that I wouldn't hit full boost in first or second gear only 6psi or so (7.5 psi target). The last thing was that each time i would shift iat WOT the boost would spike anywhere from .5 psi to 1.5psi so this to me was unacceptable.

I thought an electronic boost controller would be the answer to my problems and while, overall i like the AVCR it didn't solve my problems at all. I still don't hit full boost in the first two gears and i'm still getting the boost spikes when i shift. I've researched and the only thing I've come across as a possible solution to the boost spiking is to port and polish the wastegate. Anyone have any experience with this? Also does anyone know of anyway that I can run at 7.5psi through every gear? This is begining to get really frustrating.

EDIT: Mods feel free to move close the other thread that I originally posted in the Audio, Video, Electronics section

SH Luciano

iTrader: (1)

more than likely your car isn't flowing enough exhust gas for that turbo for you to hit full boost in first gear...at least that's my guess. what turbo comes with that kit do you know?

the boost spike issues when shifting i would think are related to a blow off valve configuration, because thats whats suppossed to vent off the air flowing into your motor when you aren't under the throttle.

DanielW

iTrader: (27)

its a 5at so I'm always under throttle

DanielW

iTrader: (27)

Ok now that I have looked into it on some other forums it looks like I'm going to have to fine tune the duty cycle in each gear and each rpm range. I think I should be able to pull this off. I'll keep this thread updated on my progress

MIAPLAYA

iTrader: (3)

I believe the turbo in the STS kit is a T04E 60 trim compressor with a T4 O trim .58 A/R turbine section. No idea if its ball bearing or not.

Sharif@Forged

iTrader: (92)

A small spike between hard shifts is going to be expected. With the turbo out back, it wouldn't surprise me if you need a little more load to get that turbo going....so 1st and 2nd gear might be too brief. If anything, a little less boost in 1st and 2nd might actually be a good thing.

DanielW

iTrader: (27)

well I took it out for a little while tonight just to get a feel for the unit and I felt like I'm getting the hand of it. It's deffinitely tough to get it exactly right but I can deffinitely see this thing giving me a consistent boost level throughout the gears with a little more tweaking. One thing I noticed is that its somewhat sporatic on its response time when you change the duty cycle by individual gear

DanielW

iTrader: (27)

If anyone has settings for this unit on a 5at i would pay cash money for dat **** yo haha. Seriously though i doubt i'm going to find it on here because not alot of people seem to se this unit but if anyone has settings i would greatly appreciate it

denchan350gt

iTrader: (4)

Did you try to lower the rpm the EBC starts working at? The default is 3000rpm.

I have the same unit you can change the duty and boost between rpms.

I don't have my manual with me but I think you go the neo section with the rpms and lower the rpms in increments of 500rpm.

The controller will start working at a lower rpm than 3000.

denchan350gt

iTrader: (4)

Here is something to help you since it doesn't read psi.

0.400bar= 5.802psi
0.500bar= 7.252psi
0.600bar= 8.702psi
0.700bar= 10.153psi

I would put it at 0.45 or 0.50bar and play around with the duty cycle starting from the lowest which I think is 10 or 20%.

Alberto

iTrader: (14)

I dont think many turbo cars hit full boost in 1st gear, just not enough load+spinning...I know that the Apexi BC is capable of gear dependent boost. If you really wanted 7.5psi in 1st you could set it to say 9psi to hit your desired level-7.5psi in 1st/2nd gears? Just a thought this may be a silly idea...

DanielW

iTrader: (27)

I was thinking along the same lines. We'll see if it works or not. I've got second and third gear dialed in pretty good now i just need to get first to go up a little more and fourth to go down a little. I'll worry about fifth later since I don't usually boost in fifth anyway

IIQuickSilverII

iTrader: (13)

i guess overall then your problems are not related to the ApexI boost controller.... but staying on the boost controller topic...

anybody has heard or reviewed this item b4? http://www.gizzmoelectronics.com/product_msibc.htm

DanielW

iTrader: (27)

of course they're related to the boost controller since that is what I"m trying to use to fix them

Bullitproof

iTrader: (3)

i used the apexi unit on my turbocharged gs-r and hated it. it took too long to get ity set up, and i never got it working perfectly. talking to a couple didnt installers, i decided to go with the blitz sbc-id. good luck and and hope you get that thing to work!!!

IIQuickSilverII

iTrader: (13)

cool
how about the gizzmo unit...i saw they had an article on DSPORT

DanielW

iTrader: (27)

ok so i spent a little more time on it today and I've now got 2nd 3rd and 4th gear all right at 7.5 psi so I'm happy about that because those are the gears i primarily run the car hard in. I am really begining to doubt whether or not I will be able to get 1st gear to run that high without pushing the other gears over but we'll see.

EDIT: This is WAY more involved than i thought it would be

denchan350gt

iTrader: (4)

What did you do exactly since I have the same EBC?

DanielW

iTrader: (27)

I turned the gear learning mode off for each gear and set the duty cycle to 27% and the boost to .55 bar. I set the gear specific duty cycle to +30% in 1st gear +25% in second gear 0% in 3rd gear and -2% in fourth gear. I also set the feedback speed to 9 in first gear and second gear, 3 in third gear and 2 in fourth and fifth gear

DanielW

iTrader: (27)

ok so I was focusing so hard yesterday evening on getting each gear to boost to the right level that I totally forgot about the fact that the boost spikes between shifts. So I went to take off today and it spiked up to over 9psi when i shifted because i had the feedback speed set so high. So now It's back to the drawing board. Why can't they just make a controller where you can put in a number and it does everything else? It seems like as advanced as technology has become they would be able to accomplish that especially for a $500 unit