Initial tune: GReddy Profec B Spec 2

[trufanatic]

And you are???Not to sound like a dick...there are plenty of ppl with ms3 running mbc for a while and havnt had a problem yet. also alot of gti's have been running ebc and mbc for a while now and we practicly share the same turbo..so i ask again who are you to make such a statement....Shoot i know plenty of SRT4's, STI's, and EVos personaly that have been running mbc on thier cars for years and have yet to see any problems..yes and ems would be great but the one i want is not out yet so the ebc will keep me happy till the cobb ap comes out..this isnt my solution for the remainder of the time i have my car just a for now solution..To the original OP Hows the car running havnt heard from you in a while....

I use to own a srt4 also numerous turbo Japanese cars and im not talking out my ass, its a very important tip for longevity purposes. you put what ever car you just named and monitor it with a lambda or some other wideband and you'll see what im talking about. You obviously make decisions based on what other people are doing which can be a good and a bad thing but also ask those srt-4, vw or whatever car buddies of yours if they have tuned their cars with an afc or someother utility to control fuel but most popular are the mopar stages because they run rich. i kno for a fact that stock turbo srt4's running a boost controller are either using an afc or emanage because again....fact: the plugs in the car get fowled often if not tuned and if not tuned the car starts breaking up at lower rpms after the srt's PCM sees detonation in the combustion chamber. In advance if you ask yourself what detonation is...here: http://www.misterfixit.com/deton.htm

im not being a dick just trying to help educate

 

[Craighjr]

I use to own a srt4 also numerous turbo Japanese cars and im not talking out my ass, its a very important tip for longevity purposes. you put what ever car you just named and monitor it with a lambda or some other wideband and you'll see what im talking about. You obviously make decisions based on what other people are doing which can be a good and a bad thing but also ask those srt-4, vw or whatever car buddies of yours if they have tuned their cars with an afc or someother utility to control fuel but most popular are the mopar stages because they run rich. i kno for a fact that stock turbo srt4's running a boost controller are either using an afc or emanage because again....fact: the plugs in the car get fowled often if not tuned and if not tuned the car starts breaking up at lower rpms after the srt's PCM sees detonation in the combustion chamber. In advance if you ask yourself what detonation is...here: http://www.misterfixit.com/deton.htm

im not being a dick just trying to help educate

I'll back you up withwhat you originally said but I was always told it was "PTFB" Partial Throttle Full Boost. Subarus seem to have a problem especially when you bolt up a MBC. The idea is you can't tune your fuel maps and if you get PTFB you may see 18PSI at something low like 25% throttle where the car doesn't expect so much boost making a huge lean spot.

 

[TRSpeed3]

I use to own a srt4 also numerous turbo Japanese cars and im not talking out my ass, its a very important tip for longevity purposes. you put what ever car you just named and monitor it with a lambda or some other wideband and you'll see what im talking about. You obviously make decisions based on what other people are doing which can be a good and a bad thing but also ask those srt-4, vw or whatever car buddies of yours if they have tuned their cars with an afc or someother utility to control fuel but most popular are the mopar stages because they run rich. i kno for a fact that stock turbo srt4's running a boost controller are either using an afc or emanage because again....fact: the plugs in the car get fowled often if not tuned and if not tuned the car starts breaking up at lower rpms after the srt's PCM sees detonation in the combustion chamber. In advance if you ask yourself what detonation is...here: http://www.misterfixit.com/deton.htm

im not being a dick just trying to help educate

thanks for the lesson i guess(headshake (hahaspit)....so then let me ask you this why is that the ems for the speed comes 0red out and the only thing they change is the boost???sounds to me like and expensive boost controller dont you think???sure you can tune it little by little but as far as upping the boost 2-3 psi i dont see any problems these cars come extremly rich..Nope none of my buddys run an safc or any tuner..all cars race on the street and auto x and are abused and agian none of them have any issues wat so ever.....Also i see you have no experience with a disi wouldnt having this kinda motor change thins abit???i think so...all i know is im installing my ebc and will post up soon and do an update every month or so and the i can say i told you so...maybe i can get driver 311 in here i know hes been running a mbc for maybe a month or more now....

 

[trufanatic]

youre talking about just raising boost and im talking about the condition that happens inside the combustion chamber with part throttle boost and a lack of fuel to compensate and did u notice i used the word longevity? two totally different conversations dude, i give up. it doesnt matter if it the disi, sr20, srt4, 4g63...its simple mechanics. im going to make this easy, you win! so do what you do

 

[TRSpeed3]

youre talking about just raising boost and im talking about the condition that happens inside the combustion chamber with part throttle boost and a lack of fuel to compensate and did u notice i used the word longevity? two totally different conversations dude, i give up. it doesnt matter if it the disi, sr20, srt4, 4g63...its simple mechanics. im going to make this easy, you win! so do what you do

yayaya i win i win.....(alright)(alright)I do understand what your trying to say about longevity but like i said im my previous post this is just to hold me off till the AP comes out and that probably goes for all the ppl that are running mbc or ebc....

 

[trufanatic]

yayaya i win i win.....(alright)(alright)I do understand what your trying to say about longevity but like i said im my previous post this is just to hold me off till the AP comes out and that probably goes for all the ppl that are running mbc or ebc....

i hate bandaids. my motto is if youre going to do it, do it right. every car with a skittle for a turbo experiences this problem with a salenoids - less boost controller. you're worse than my ex wife, im right but you still decided to prolong the conversation...so i did to you what i did to her...you win, that usually ends it

what he said:

I'll back you up withwhat you originally said but I was always told it was "PTFB" Partial Throttle Full Boost. Subarus seem to have a problem especially when you bolt up a MBC. The idea is you can't tune your fuel maps and if you get PTFB you may see 18PSI at something low like 25% throttle where the car doesn't expect so much boost making a huge lean spot.

 

[TRSpeed3]

i hate bandaids. my motto is if youre going to do it, do it right. every car with a skittle for a turbo experiences this problem with a salenoids - less boost controller. you're worse than my ex wife, im right but you still decided to prolong the conversation...so i did to you what i did to her...you win, that usually ends it

what he said:

hahah your a funny guy as long as you know i win...(band)(band)(band)

 

[speed3shon]

i hate bandaids. my motto is if youre going to do it, do it right. every car with a skittle for a turbo experiences this problem with a salenoids - less boost controller. you're worse than my ex wife, im right but you still decided to prolong the conversation...so i did to you what i did to her...you win, that usually ends it

what he said:

ok, just for future reference, its solenoid. and im confused, as most electronic boost controllers use solenoids to control the boost?

 

[trufanatic]

ok, just for future reference, its solenoid. and im confused, as most electronic boost controllers use solenoids to control the boost?

yes they use solenoids to control boost but they do not directly reference throttle response.btw, sorry for the spelling .

again you can be at 15-20% throttle but create 70-80% of boost inducing a very lean condition until you got WOT.

 

[speed3shon]

gotcha, no worries on the spelling, just a thing i have. ha

 

[TRSpeed3]

i will be installing tomorrow..can you please post up the new settings you have

 

[astraelraen]

So the jist of the problems with this method that I can gather is that a boost controller that doesn't monitor fuel can cause pre-mature boost and thus cause leans conditions?

How do you solve this? I was reading about this unit and it seems like a pretty good unit if all you want is something to control boost.

 

[trufanatic]

So the jist of the problems with this method that I can gather is that a boost controller that doesn't monitor fuel can cause pre-mature boost and thus cause leans conditions?

How do you solve this? I was reading about this unit and it seems like a pretty good unit if all you want is something to control boost.

what you stated above is correct. a way to fix the problem? yes:

1. a stiffer wastegate spring or a wastegate actuator that can be preloaded - this helps but doesnt completely make the prob dissapear

2. greddy profec e-01 boost controller reads rpm thru ur tach if in the correct voltage parameter or you can get a msd tach adapter and can adjust accordingly.

3. get a bigger turbo, harder to create boost and tuning for fuel is easier(rockon). better in city gas mileage, no PTB and will pull like a ***** ape.

 

[boost3]

im trying

i installed mine yesterday cant get it to stop spiking over 4grand in 5th gear pulls.It holds 16.6 psi in first 3 gears but then spikes to 21 in the other gears..My mods r corcksport tbe cp-e intake forge bypass valve.those r engine mods.anyone have numbers for this set up

 

[07speed3]

where did you guys mount your ebc?

 

[07speed3]

anyone got any updates on how its running?

 

[DCYT]

yes they use solenoids to control boost but they do not directly reference throttle response.btw, sorry for the spelling .

again you can be at 15-20% throttle but create 70-80% of boost inducing a very lean condition until you got WOT.

PTB will happen, but wouldn't the MAF meter the air correctly and add the appropriate fuel?

Boost up = more air = maf see more air = put more fuel in.

Doesn't that make sense?

 

[Demi]

PTB will happen, but wouldn't the MAF meter the air correctly and add the appropriate fuel?

Boost up = more air = maf see more air = put more fuel in.

Doesn't that make sense?

No. More air isnt passing the MAF. Less air is bypassing the turbo.

But i do have a question for fanatic. Why would a manual boost controller push more boost at partial throttle than the stock controller? Does the stock ecu regulate boost for partial throttle? I dont know if im wording that well...

 

[DCYT]

Err .... I think you got it mixed up.
Any air going into the engine will pass the MAF. If air is not passing thru the MAF, you have an intake leak.

How is less air bypassing the turbo?? Air does not bypass the turbo. Again, any air going into the engine will pass the turbo. If air is not passing thru the turbo, you have an intake leak.

Moreover, the turbo does not bypass air, the turbo compresses air ....

No. More air isnt passing the MAF. Less air is bypassing the turbo.

But i do have a question for fanatic. Why would a manual boost controller push more boost at partial throttle than the stock controller? Does the stock ecu regulate boost for partial throttle? I dont know if im wording that well...

 

[Demi]

It thought about it and im wrong, i was talking about the wastgate allowing exhaust to bypass the turbo, and how a boost controller controls the wastegate, but the part i was wrong about was the MAF. With higher boost the turbo pulls more air in, so it would in fact be more air past the MAF. I was half asleep.