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 Post subject: Anyone played with ALS on their ecu's
PostPosted: Tue Jan 03, 2012 10:51 am 
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Joined: Fri Dec 30, 2011 10:43 am
Posts: 85
ECU Model: S60 Pro
I will be attempting once new engine is run in, to invoke ALS on my racecar.

The car in question is a 1.8t Seat Ibiza racecar, running a hybrid GT35 unit.. runs twin injectors, water injection, cams etc etc... a shed load of mods basically. The car is raced in castle combe saloon car c'ship in class A. What I am trying to achieve from the new spec motor, which is higher compression than before.. was 8.5:1, now 9.25:1, is increased off boost and low boost response.. I have also retrofitted vvt off the later 1.8t engines onto mine... I have seen results from others by employing vvt early, then switching off again in improved spool and earlier torque.. VVT on 1.8t being crude, 22deg advance on-off type application I believe.

So.. cars running dbw throttle off its stc (large 80mm throttle), and I would like to get some light als working to maintain off throttle response/spool for when I come back onto the throttle out of the chicanes @ combe for example.

Anyone got some settings advise on how to approach this carefully..

thanks


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Tue Jan 03, 2012 4:53 pm 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2904
Location: Norn Iron
ECU Model: No ECU
Ive never done it on DTA. But you will need to monitor EGT's

Can the DBW be programmed to remain partially open to allow air on for the ALS when your foot is off the pedal ?

Problem with ALS is AFR readings go out the window. So it's easy to get carried away with a lot of air and lot of fuel for really big bangs, and really high EGT's

A lot of ecu's just work with a percentage increase or decrease in fuel rather than a fully map. Same with timing, pull x deg of timing when ALS is active.

You could try leaving fuel as is, and pull say 20deg of timing on closed throttle and see how that goes. With idle valve open enough that it would maintain 3-4000rpm normally.

And an 80mm TB if that's the size of the blade is absolutely massive for such a build. That's 1000bhp sort of sizing, and will hurt throttle/foot response and engine response. Unless you can tune around it with the DBW


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Mon Jan 09, 2012 5:10 am 
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Joined: Wed Mar 17, 2010 9:24 am
Posts: 329
ECU Model: S80 Pro
Firmware Version: 62
stevieturbo wrote:
Can the DBW be programmed to remain partially open to allow air on for the ALS when your foot is off the pedal ?


If it's DTA's STC, then no. You would need to set the "max rpm for idle control" to it's highest setting (3000rpm?) and open the blade the required amount. Probably only need around 5% if it's such a big throttle. I'm sure anti-lag and cruise control etc will follow in time.

stevieturbo wrote:
And an 80mm TB if that's the size of the blade is absolutely massive for such a build. That's 1000bhp sort of sizing, and will hurt throttle/foot response and engine response. Unless you can tune around it with the DBW


Have to agree. The blade on my 3.2 V6 is 76mm and I feel that is way too big. I had a 63mm blade on my VR6 turbo and that was more than enough at 500hp. When air is forced into an engine, I don't think throttle size is important. The head flow (valve and port area) are the biggest restrictions, and sometimes the OE intake.


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Tue Jun 19, 2012 6:38 am 
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Joined: Fri Dec 30, 2011 10:43 am
Posts: 85
ECU Model: S60 Pro
VR6Turbo wrote:
Have to agree. The blade on my 3.2 V6 is 76mm and I feel that is way too big. I had a 63mm blade on my VR6 turbo and that was more than enough at 500hp. When air is forced into an engine, I don't think throttle size is important. The head flow (valve and port area) are the biggest restrictions, and sometimes the OE intake.


The engine in question. 1900cc 20v seat ibiza
S60 and STC, 8 injectors, currently 12psi 360bhp, 25psi 545bhp on its hybrid gt35
races in castle combe saloon car c'ship
Image


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Tue Jun 19, 2012 9:31 am 
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Joined: Wed Mar 17, 2010 9:24 am
Posts: 329
ECU Model: S80 Pro
Firmware Version: 62
Nice build. Liking the Speedflow fittings, which are the best I've used personally.

Good numbers for the boost. What's the spec of the 35R?


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Tue Jun 19, 2012 10:56 am 
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Joined: Fri Dec 30, 2011 10:43 am
Posts: 85
ECU Model: S60 Pro
35 is 0.82 with precision 62 compressor on it (billet wheel)
spooled like the normal 35 did, but flows more for same boost..

just changing the hotside for tial vband to eliminate nuts/bolts/gaskets from letting me down.


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Wed Jun 20, 2012 4:55 am 
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Joined: Wed Mar 17, 2010 9:24 am
Posts: 329
ECU Model: S80 Pro
Firmware Version: 62
I've heard nothing but good things about the tial turbine housings. Hmmmm, kind of making me want to do another turbo build now! How does yours compare to Garrett's own billet wheel? GTX3582 isnt it?

Again, that's a great build. I really like it when people go the extra mile for reliability.


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Wed Jun 20, 2012 6:00 pm 
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Joined: Tue Sep 06, 2011 4:53 am
Posts: 130
ECU Model: S40 Pro
crikey! thats quite a power advantage over the (quicker over a lap) pugs! :0

is it allowed to have als? i know theyre not keen on noisy cars


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Fri Jun 22, 2012 11:35 am 
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Joined: Fri Dec 30, 2011 10:43 am
Posts: 85
ECU Model: S60 Pro
ibizacupra wrote:
35 is 0.82 with precision 62 compressor on it (billet wheel)
spooled like the normal 35 did, but flows more for same boost..

just changing the hotside for tial vband to eliminate nuts/bolts/gaskets from letting me down.


i have not seen any precision comp maps, but rumour has it, htx series and other billets are pretty similar in overall peak flow terms.. vague answer sorry.


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 Post subject: Re: Anyone played with ALS on their ecu's
PostPosted: Fri Jun 22, 2012 11:36 am 
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Joined: Fri Dec 30, 2011 10:43 am
Posts: 85
ECU Model: S60 Pro
welshpug wrote:
crikey! thats quite a power advantage over the (quicker over a lap) pugs! :0

is it allowed to have als? i know theyre not keen on noisy cars


noise *might* be an issue.. not run it yet.
i have vvt to play with enabling on it before i try also

its one of the quicker cars when i am out there.. just not out there often as i have so little "me time" unfortunately.


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