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Any Point In Fitting A Chip And Boost Controller
Topic Started: Apr 12 2008, 10:00 AM (190 Views)
davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
hi guys, i am going to fit an electric boost controller to my sti and was thinking of getting the ecu chipped or changing the ecu.

i have done quite a bit research on the topic and i have a few doubts.

1. i am changing the boost controller as i think the standard one is on its way out. when the car starts to boost its quite ticky and fluttery and when its in full boost it judders not a massive amount but it is apparent.

2. once i have changed the boost controller i will have control how much boost to give so i wont be expecting the ecu to do that.

3. there is no speed limiter so that wont need anything doing to it.

4. i am only running a full de-cat and a pipecross panel filter.

will the chip/ecu upgrade do anything or will it be a waste of money.

thanks David


[GK-customfield]David Goodwin[customfield-GK]
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myblackwrx
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Doesn't have a home to go to!
[ *  *  *  *  * ]
Depends how far you want to push the car.

Remapping the car (via a fully remappable ecu such as apexi powerfc,simtek,esl live mapping board etc) is your best option imo rather then chip/boost controller combo.

Have a look here for prices http://www.jollygreenmonster.com/ (just examples as people will charge you slightly different prices)

Having been in a few of Jollys remapped cars getting a remap was worth it.
[GK-customfield]Paul[customfield-GK]
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RA Jay
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4 Have Gone But Never Forgotten.
[ *  *  *  *  * ]
You cant just go fitting boost controllers and winding up the boost fella theres loads of things to take in to account...fueling,ignition timing and fuel cut..

The dearest but best option is to buy a standalone ecu and have it custom mapped to your car. The second option is a generic mapped chip plugged in to you existing ecu and the third option is to fit an FCD wind the boost up then sit back and watch it throw a rod through the block...

The decision is yours.
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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LegacyTurbo
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y0
[ *  *  *  *  * ]
The generic chips are well worth it IMO, as for the juddering i would say get your plugs changed/regapped and check the coilpacks out, boost control wont make it juddery.
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
the boost at the moment is set at 0.9 bar i am quite happy with it staying there but i prefer the way the car boost when its not using the standard boost controller. plus i do think that its on its way out.

what i wanted to know was would there be benefits of fitting a new ecu or chip the one i have.

i have no plans to get rid of the car so it is a long term project so the skys the limit to where the hp will end up, i really would like to be getting 300-320hp at the mo and over the next few years i would like to hope and get to the 380-400hp mark.

like i said before this will be a long term plan, i am not a dreamer i know it will take lots of funding but thats the plan, but i do need a good starting block and an idea of where i should start.

thanks david
[GK-customfield]David Goodwin[customfield-GK]
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davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
when the turbo starts to go in to boost there is a loud ticking/flutter and when its in full bosst it still does it but not as loud but does judder.

Thanks
[GK-customfield]David Goodwin[customfield-GK]
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myblackwrx
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Befroe you star modding it get a health check done on a r/r speak to Triton about your concerns about the turbo.

to get 380/400bhp as your final mark that will require an engine rebuild,remappable ecu,bigger injectors,better turbo,uprated fuelling system,fmic.

fuel pump,uprated fuel pressure regulator,bigger injectors,remappable ecu (depending on what ecu you go for) ,new coilpacks,maybe slightly uprated spark plugs would set you back about £1500-£2000 (extremely rough guess).
They can all be fitted at once rather then doing it small bit by small bit
[GK-customfield]Paul[customfield-GK]
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davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
thanks mate, over the next few years that should be do-able thanks very much.

i had a wrx a few years ago and it had the exact same problem noisy when boosting so i took it to triton and the young lad (lewis i think) diagnosed it as a faulty boost controller so he changed it for a dawes device and it seemd to help it but i could still hear it ever so slightly.

thanks
[GK-customfield]David Goodwin[customfield-GK]
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agent003
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myblackwrx
Apr 12 2008, 11:11 AM
Befroe you star modding it get a health check done on a r/r speak to Triton about your concerns about the turbo.

to get 380/400bhp as your final mark that will require an engine rebuild,remappable ecu,bigger injectors,better turbo,uprated fuelling system,fmic.

fuel pump,uprated fuel pressure regulator,bigger injectors,remappable ecu (depending on what ecu you go for) ,new coilpacks,maybe slightly uprated spark plugs would set you back about £1500-£2000 (extremely rough guess).
They can all be fitted at once rather then doing it small bit by small bit

In addition to this if runnig that kind of power you will also need a stronger gearbox ie a 6 speed conversion or ppg and for that you can budget for around the £2000 figure....if you dont it will work out much more expensive :thumbsup:
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davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
so i really need to be looking to save around 4k and that should get me to around that sort of power.

Thanks David
[GK-customfield]David Goodwin[customfield-GK]
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myblackwrx
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Doesn't have a home to go to!
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the 2nd part of my post will get 300bhp without needing a new gearbox/clutch combo but will put more strees on the box.
[GK-customfield]Paul[customfield-GK]
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agent003
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I think at £4000 will be a bit optimistic tbh as the standalone ecu and remap will cost you about £800 at leastand the turbo there abouts to the same so 1600 just there before you touch the engine... forged bits is what you would ideally need when rebuilding the engine and im not sure if Paul has included this in his guessed engine budget.

:thumbsup:
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myblackwrx
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agent003
Apr 12 2008, 11:06 AM
I think at £4000 will be a bit optimistic tbh as the standalone ecu and remap will cost you about £800 at leastand the turbo there abouts to the same so 1600 just there before you touch the engine... forged bits is what you would ideally need when rebuilding the engine and im not sure if Paul has included this in his guessed engine budget.

:thumbsup:

Didn't guess the engine budget :)

£1500-£2000 will get him the 300-320 bhp easily which is what he wanted to start.

The parts that will get 300bhp figure will get you upto 400bhp BUT as agent003 said £2500 approx for engine rebuild,£2000 for a nice 6 speed gearbox (apiengines can supply them) and with the turbo it's a lot harder to chose as it depends how quickly tyou want boost to come in etc.

I wouldn't wiorry about that until you come to finalising your car.
[GK-customfield]Paul[customfield-GK]
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agent003
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Sorry Paul as I got myself muddled up with the price quote you gave him for the injectors etc :doh: :thumbsup:
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myblackwrx
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agent003
Apr 12 2008, 11:30 AM
Sorry Paul as I got myself muddled up with the price quote you gave him for the injectors etc :doh: :thumbsup:

tbh i could have made my post a lot clearer :)
[GK-customfield]Paul[customfield-GK]
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agent003
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myblackwrx
Apr 12 2008, 12:32 PM
agent003
Apr 12 2008, 11:30 AM
Sorry Paul as I got myself muddled up with the price quote you gave him for the injectors etc :doh:  :thumbsup:

tbh i could have made my post a lot clearer :)

Nahh...it was only me mate jumping the gun (think i might of done this before :rolleyes: :lol: )

:thumbsup:
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LegacyTurbo
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y0
[ *  *  *  *  * ]
you can get 300bhp for a lot less than 2k got it for less than 1k on the leggy :)
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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RA Jay
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4 Have Gone But Never Forgotten.
[ *  *  *  *  * ]
LegacyTurbo
Apr 12 2008, 12:56 PM
you can get 300bhp for a lot less than 2k got it for less than 1k on the leggy :)

Ditto i managed 313bhp for just £500 ;)
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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LegacyTurbo
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y0
[ *  *  *  *  * ]
;) i would have had a bit more but the boost tailed off to 0.9bar in the high revs and only peaked to 1.05. Still happy enough though :)
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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LegacyTurbo
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y0
[ *  *  *  *  * ]
What was your power/torque curve like Jay?
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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RA Jay
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4 Have Gone But Never Forgotten.
[ *  *  *  *  * ]
It made just short of 300FTLB of torque

dyno plot is here...

http://z10.invisionfree.com/djcc/index.php...topic=2916&st=0
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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tom
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Doesn't have a home to go to!
[ *  *  *  *  * ]
at college we were discussing how to get a great power increase and for a standard car we worked out it would be somewhere in the 10-15k mark. i will have a look at my notes as to what we were going to change for this but i remember the figure. i think we were working it out roughly for a vauxhall astra tho... bit different in performances and buying price range. im not too good with these cars as i cant afford 1 and never even touched 1 lol. i will have 2 find my notes too see what we changed. i rember a few things were cams throttle body or bodies exhaust ECU injectors and lots of other stuff.
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LegacyTurbo
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y0
[ *  *  *  *  * ]
:o
[GK-customfield]Lewis[customfield-GK]
Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD :(

EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost)
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RA Jay
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4 Have Gone But Never Forgotten.
[ *  *  *  *  * ]
How do you define great power?....how long is a piece of string springs to mind.

and to be honest if someone put 15k into a vauxhall astra engine they would want their head tested... :lol:
1995 WRX - 318bhp/300ftlb - SOLD - 2005
2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007
1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008
1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009
1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009

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davidgoodwinuk
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1993 WRX
[ *  *  *  * ]
what did you do to the car to get 313hp Jay.

Thanks David
[GK-customfield]David Goodwin[customfield-GK]
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