[Kai]

Looking good, very nice installation there. How do you like the DSBC-S? Few years back I had the first version DSBC, but never got a chance to install it and sold it at very cheap price on eBay. Always wanted to know how it's like compares to the AVC-R. The Blitz one is so much more discreet than that flashy r_i_c_e_y AVC-R I have.

Like to talk about this project of yours a bit?

quote:

Originally posted by Johann:

I can read the pressure through the SCT (OBD-II) in dash boost gauge and now also through the Blitz BC.

 

[Kai]

And here's mine installation, not like you haven't seen it..

 

[Johann]

quote:

Originally posted by The_one_n_only:
Like to talk about this project of yours a bit?

Heh heh...

It's a nice gadget but I don't think it comes anywhere near the AVC-R
Very clean and simple installation and very simple to operate.
Only down side is the S60 itself.
There's absolutely no f"ing space to mount the thing and it only measures ~ 3/4" x 3 3/16" x 3 3/4 " .
That's why I wrecked the dash cover because it is the cheapest replacement part.

Setting it up is very straight forward but there's one option which needs a lot of extra attention with the 19T compressor which is the gain setting.
This thing is a real rod bender.
Do anything wrong here and it gives a nice maximum boost peak at 2300 rpm or so....

What more can I say, i don't need 4 setting because that's what my foot is for, maybe for long cruises to lower the boost for better mileage but I doubt it'll make any difference.
I drove 50 Km with the car today, went on the highway and pushed up to 125 Mph when I saw an undercover, somehow you can always recognize them, police car in the distance which spoiled the fun.
Just as I approached his bumper he pulled over a speedy diesel.

The BC confirmed what I was thinking for a long time already.
When boost goes beyond 18 Psi the IC heats things up.
The car feels a lot stronger at 18 Psi full throttle from ~3000 to redline compared to the ~21 Psi it was running before.

 

[Kai]

quote:

Originally posted by Johann:
i don't need 4 setting because that's what my foot is for, maybe for long cruises to lower the boost for better mileage but I doubt it'll make any difference.

The car feels a lot stronger at 18 Psi full throttle from ~3000 to redline compared to the ~21 Psi it was running before.

Yup yup....even though I'm only running 13~14 psi nowadays, I'm still getting 22.5 mpg in bad days...and that is with 108 octane. As long as you drive with moderation and do silly off the line launching, gas mileage isn't that bad.

Hehee...I'm glad you like the early boost setting. It's the instant torque at lower rpms that really get the car moving. I'm pretty psych'd about the way my car drives now, too. Don't have to get up to 100s to feel the rush...as long as I get over that slight lag from the IC.

BTW, my gf said.."cute kid.."

 

[coolean]

Hi Johann,

You have a very nice modified car there. Good job.

I have a Blitz boost controller as well. With gain set at 18 and boost ratio set at 64, I have max boost around 2500rpm at 15psi. Compared to stock, the max boost kicks in around 2900rpm at 11psi. I don't know the new boost setting will bent the rod or not.

HOw about your experience? Any figures and opinion will be appreaciated.

Thanks

 

[Johann]

quote:

Originally posted by coolean:
Hi Johann,

You have a very nice modified car there. Good job.

I have a Blitz boost controller as well. With gain set at 18 and boost ratio set at 64, I have max boost around 2500rpm at 15psi. Compared to stock, the max boost kicks in around 2900rpm at 11psi. I don't know the new boost setting will bent the rod or not.

HOw about your experience? Any figures and opinion will be appreaciated.

Thanks

Gain is set between 5 and 8 at the most..
I tried up to 12 but I think it is to much stress for the engine and drivetrain.
Boost is at 17-18 Psi from ~2500-5500

 

[coolean]

Thanks Johann for your info. So far, have you triggered the CHECK ENGINE LIGHT? Mine comes on and off?

 

[Johann]

quote:

Originally posted by coolean:
Thanks Johann for your info. So far, have you triggered the CHECK ENGINE LIGHT? Mine comes on and off?

Yes

It's an overboost condition probably triggered by the gain setting in combination with the boost setting.
It looks like the gain is a fixed point so when you set higher boost the gain gets "steeper"
Looks like when you set the boost at 1 bar and the gain at 5 and you up the boost to 1.25 bar you have to lower the gain to 4 to keep the same boost rising rate.

I can reset the messages myself with an OBD-II device and so far on the 2 occasions it occured the message was an overboost warning.
The MAF and MAP need to be in balance.

 

[coolean]

Hi Johann,

The message comes out when I was holding the boost at around 0.93 bar for 5-6 sec...The light triggered. Sometimes it triggered, sometimes it doesn't.....I afraid this means the fuel runs lean or sth like that.....Like you said, it is just a warning, so do you think i shouldn't worry about too much.

What do you mean by
The MAF and MAP need to be in balance"

THanks

 

[Johann]

quote:

Originally posted by coolean:
Hi Johann,

The message comes out when I was holding the boost at around 0.93 bar for 5-6 sec...The light triggered. Sometimes it triggered, sometimes it doesn't.....I afraid this means the fuel runs lean or sth like that.....Like you said, it is just a warning, so do you think i shouldn't worry about too much.

What do you mean by
The MAF and MAP need to be in balance"

THanks

Are you using a BC without ECU modification?
I don't think I would do that, to risky to run lean.
I do not use the scramble funtion at all.
I think this is what caused the warning with my car and after I disabled it I didn't have the message again.
I drove 400 km with the car last Thursday and it went very smooth.
I think the overboost warning comes from a different reading between the MAF and the MAP sensor.
Both can be used to calculate the air going in to the engine so both have to give almost the same value's or the ECU might think there's something wrong.
I don't know how the ECU uses the information but I think this is the only way for it to detect an overboost situation which can be dangerous for the engine.
The "emission services required" message can be a lot of things.

 

[Johann]

A little update after using the BC for some time now.

So far I am 90% happy with the BC.
I settled to two settings. cruise and power

One is at ~13 psi and on at 19 psi with the safety mode set to reduce boost a litte when 20 psi is reached, it happens sometimes with rainy weather.
Every now and then I readjust the gain setting because the gain is sensitive to type of weather.
We had high humidity and temps over the last couple of weeks, mostly between 25 and 30 degree C.

The problems I'm still running in to are an overboost warning and sometimes an ECU power reduction to 2000 rpm without boost, with the power reduction it seems like the ECU is keeping the turbo from doing it's job because 2000 rpm is below the spooling point of the turbo.
I had the reduced power problem twice so far but never at full throttle but in the mid throttle area.
One DTC gave me 70% calculated engine load at 4200 rpm and this is an area where I am not so happy with the BC.
When driving through higher speed corners I never lift the throttle completely but I reduce throttle up to a point where I think the engine gives continious power.
I sort of lever the throttle between this point and almost full to build more power if possible and keep the nose of the car in front, keep it balanced, but this is where the BC starts working against me.
It somehow doesn't respond fast enough and sometimes it allowes a high boost peak.
When the ECU want's to cut the boost peak it discovers it can't because the BC is a standalone and then it just cuts all the power for safety reasons.
I want to check the wastegate lever because I have a suspision that it has a "tight" point in it's stroke, like the actuator has to overcome an amount of force before it can move on making it "overev

" on the stroke.

I received a new chip yesterday with altered boost margins but I didn't install it yet.

PS forgive my sometimes bad explanaitions of things.