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LS1 GenIII

Started by _Herne_ , Jan 30 2009 11:18 AM

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#1 _Herne_

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Posted 30 January 2009 - 11:18 AM

Hi Guys, a good while back there was a thread posted here on easy ways to get more out of an LS1 engine. I think it was mostly by altering the ECU settings? rather than purchasing a lot of gear.

I have looked for the thread but cannot find it. A search did no good either as I didn't have a clue as to its title.
Can anyone please find this again?

Failing that any help on what one should first do to improve an LS1. My son has owned an VYSS from new and now wants more performance from it.
He has the series 2 with 6 speed manual.

Here are a few items he has written down for consideration.
Extractors - he already has a free flowing exhaust from the cats back
Cold air intake
ECU (aftermarket)?
Cam
Throttle body
He will also be replacing plugs and leads and wants to use Iridium plugs. He also wants to replace the clutch but not a sacrificial one as came standard.

All opinions appreciated.

Cheers
Herne

Edited by Herne, 30 January 2009 - 11:23 AM.

#2 _JBM_

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Posted 30 January 2009 - 11:30 AM

There is an LS1 forum that can help you.
Most people do a Mafless tune and Cat back exhaust if you dont want to open the engine.
The next step would be a centrifugal supercharger with further engine upgrades to suit.

James

#3 FastEHHolden

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Posted 30 January 2009 - 11:43 AM

Zoom mag did an excellant step by step article on how to acheive you desired amount of HP...i'll have a bit of a look for it.

#4 _WOZ_

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Posted 30 January 2009 - 11:44 AM

talk to Ed at autotech in hume .

#5 _Herne_

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Posted 30 January 2009 - 11:53 AM

Zoom mag did an excellant step by step article on how to acheive you desired amount of HP...i'll have a bit of a look for it.


Cheers mate that could be handy to have :)

Herne

#6 _Herne_

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Posted 30 January 2009 - 11:56 AM

There is an LS1 forum that can help you.
Most people do a Mafless tune and Cat back exhaust if you dont want to open the engine.
The next step would be a centrifugal supercharger with further engine upgrades to suit.

James


Now you mention it I think it was the Mafless tune that someone here wrote the article about. Be handy if we could find that article again as it was quite comprehensive.

I have yet to check with Danny at Performance Garage but he will be doing whatever work is required, I wanted to read up on it though to gain some background knowledge - gives me a clue as to what might be discussed without me appearing like a complete moron on the subject lol

Edit cheers WOZ, you gave me the word Mafless so I searched that and found the article.
http://www.gmh-toran.......t=0&start=0 :)

Any other tips and advice is most welcome guys so please dont stop here if there's more that can be done.
One small problem, Danny doesnt have LS1 edit so that is why its a thought to change to an aftermarket ECU which is fully tuneable with software provided.

Cheers
Herne

Edited by Herne, 30 January 2009 - 12:03 PM.

#7 Rockoz

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Posted 30 January 2009 - 12:13 PM

Over radiator cold air induction. Do not use SS Inductions. Sureflo Exhaust Ingleburn have a good one.
Extractors, Hi Flow metal cats, single 3 1/2 inch exhaust. Di Fillipo or again Sureflo Exhausts. Kits available.
Mafless Tune. Oztrack Performance. This is something your garage may not be able to do. Sams Performance also do a great tune. Check LS1.com for contact details.
These are tried and proven modifications. Other variances have been tried, not all of them successful.
I personally use Sureflo Exhaust, and have done for a long time. I have never been dissappointed. Just my opinion.

#8 MRLXSS

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Posted 30 January 2009 - 12:14 PM

That MRLXSS character did a good write up didnt he!

#9 _Herne_

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Posted 30 January 2009 - 12:16 PM

That MRLXSS character did a good write up didnt he!


You sure did Matt :)

Herne

#10 Tiny

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Posted 30 January 2009 - 01:03 PM

I'm with Rockoz - all those companies you can be sure will give you what you pay for.
I've heard nothing but excellent reviews of sam's performance and they would probably be the best to discuss where to spent the budget!

#11 _UDLOSE_

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Posted 30 January 2009 - 01:22 PM

My mates boss has a VY SS ute. He did started out with a tune (especially the shift points on the auto). He added a cam did some head work (mainly valve springs to suit the cam I think, nothing hardcore), cheap extracters and they were getting 12.0 out of it down the quarter. Added 150 shot of gas and did 10.7 straight off the bat (then got kicked out of the drag strip).

#12 _high_rpm_

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Posted 30 January 2009 - 01:36 PM

good mafless tune, otr cai, cat back and a 2800 stally is what seen my mates 1870kg(+ driver) vt senator to a high 12

#13 yel327

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Posted 30 January 2009 - 03:16 PM

I just did a full 3.5" Sureflo exhaust and Oztrack ECU tune on my VZ Cross8. It didn't need the air intake changed as VZ's already have higher flow Maf and air intake. Picked up about 30 odd kW at the wheels and now has a dead flat torque curve. And better economy. Best bet is to talk to Steve at Oztrack before doing anything else.

#14 _Herne_

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Posted 30 January 2009 - 04:20 PM

After a brief discussion with my mechanic it would appear my son is looking at the following improvements. These are open to be changed so nothing yet is set in place or ordered.

Extractors, he already has a 3" system from the CAT back.
Cold air intake, possibly Growler...
100MM Throttle body
New plugs and leads.

At the same time he will be replacing the clutch as he feels his is on the way out. The clutch is 4 yrs old, the factory clutch failed after 1 yr of service. (non sacrificial will be fitted this time)
We are also looking at a piggy back ECU unit which can be fully tuned but this depends on what the list above costs him.

I think that's it for now but we are still open to suggestions.

Comments please

Cheers
Herne

#15 _WOZ_

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Posted 30 January 2009 - 05:18 PM

i know everyone has their loyaltys but - SPEAK TO ED AT AUTOTECH IN HUME - trust me if you can. a phone call is so cheap !!!!

#16 _the gts_

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Posted 30 January 2009 - 05:38 PM

The standard computer is pretty good, just get it re-tuned.

as for the clutch my standard one in the gts broke and i put in some ceramic one. Wish i hadnt, definately bites really good which makes it a bit difficult to drive every day on the street. Cant remember what brand it is but its purple.
my mate has a strong clutch in his ute which he says is pretty good and handles his 500rwhp ok. his clutch has something in it which makes it bite harder higher in the revs

#17 Rockoz

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Posted 30 January 2009 - 05:40 PM

SS Inductions is known as SS REDUCTIONS on LS1. Not every model mind you. But pretty sure for most before VE.

#18 _Herne_

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Posted 30 January 2009 - 07:14 PM

Over radiator cold air induction. Do not use SS Inductions. Sureflo Exhaust Ingleburn have a good one.
Extractors, Hi Flow metal cats, single 3 1/2 inch exhaust. Di Fillipo or again Sureflo Exhausts. Kits available.
Mafless Tune. Oztrack Performance. This is something your garage may not be able to do. Sams Performance also do a great tune. Check LS1.com for contact details.
These are tried and proven modifications. Other variances have been tried, not all of them successful.
I personally use Sureflo Exhaust, and have done for a long time. I have never been dissappointed. Just my opinion.


Hi Rockoz

You say not to use SS Inductions. ( I just realised that the growler my son is thinking about is SS Inductions )
So what form of cold air induction do you recommend? You state above "Over radiator cold air induction. Do not use SS Inductions".
Sorry but I am confused here, are you saying use an over radiator cold air or not :)

WOZ I will try and get my son to ring Ed on Monday and see what he has to say. I hate bothering tradesmen though knowing full well I am not going to use their services. As stated we will be using Danny from Performance Garage.

Cheers
Herne

#19 _Herne_

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Posted 30 January 2009 - 07:18 PM

The standard computer is pretty good, just get it re-tuned.


The gts, Yeah didnt want to go down the standard ECU path as it means my mechanic cant tune the vehicle using the ECU, he simply doesnt have LS1 edit, hence I was thinking of a change. No other reason. We will have a good look at available clutches.

Cheers
Herne

#20 Rockoz

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Posted 30 January 2009 - 08:31 PM

Herne.
I wouldnt use the Growler on the VY. If you look at it, although it does draw air from over the radiator, it adds significant length and bends into the system. Pretty sure it is the one nicknamed reductions. Most of the shops found a decrease of up tp 12 rwkW using it.
Sureflo has a great OTR for the VY
http://www.surefloex...m.au/otrcai.htm

There are others available that work too

Edited by Rockoz, 30 January 2009 - 08:34 PM.

#21 Tiny

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Posted 30 January 2009 - 08:39 PM

Herne... Mate.. DONT change the ECU.

the factory LS1 computer is the most amazing bit of trickery there is. Find someone with LS1 edit and get them to do the work.

The main reason i say this is because the ECU interacts with so many other items in the modern cars that you will loose a massive ammount of other "features" that you dont even think about now or will have to spend a motza getting them to re-interface with whatever you choose.

Believe me the Stock LS1 computer is unreal. I have a friend with a VYSS Single turbo - LS1 edit (fuel pumps etc.. it was a GOOD install) who had used LS1 edit to get it to work all correctly. 500 RWHP no hassle, Drivable every day.

#22 _Herne_

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Posted 30 January 2009 - 09:25 PM

Herne.
I wouldnt use the Growler on the VY. If you look at it, although it does draw air from over the radiator, it adds significant length and bends into the system. Pretty sure it is the one nicknamed reductions. Most of the shops found a decrease of up tp 12 rwkW using it.
Sureflo has a great OTR for the VY
http://www.surefloex...m.au/otrcai.htm

There are others available that work too


Thanks Rockoz, exactly the info I needed. My son certainly does not want to reduce hi rwkW. :) I am sure the unit you recommended will suit him just fine. He is going to do some engine dress up stuff anyway and boy does his engine bay need some tlc. I will see what I can do with it, a clean is going to be first cab off the rank lol.

Tiny, I will rethink the ECU going on what you have said and what I read tonight from Sams guides. It seems LS1 edit is not the only programme that can tune the LS1 so we might look at one of the others for Danny which are now available from the USA.

Cheers
Herne

#23 Rockoz

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Posted 31 January 2009 - 12:06 AM

Herne.
The best way to do the tune is to take it to someone such as Oztrack or Sam. Sureflo tune as well. There are many others. Check LS1, and you will do OK with any of the forum sponsors there. You can buy the tuning tool from Oztrack if you wish to try it yourself. I think he offers base tunes with the tool at a reasonable price. This will get you started.
I wouldnt go to anyone but an LS1 sponsor. Im not saying that others are unable to do it, its just that the sponsors there do a lot to keep their reputations intact.
Oztrack do a mail order tune as well.
Sorry if I seem to be continually plugging Sureflo, but after getting 260rwkW with exhaust only from my VE I have to be pleased.

#24 Struggler

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Posted 31 January 2009 - 07:14 AM

Of all the LS1 equipped cars I have driven the single most effective modification is a diff gear swap.

I'm not saying don't consider a cam etc (and a good tune is an easy power maker) but due to their revvy nature lower diff gears really wake them up.

JMHO

#25 _moot_

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Posted 31 January 2009 - 07:35 AM

my mums vz cv8z made 316 rwhp yesterday with a basic tune (kept the maf) and extractors exhaust. nothing else.

was done at sams performance,used him heaps of times (did my ute and cammed the gto)
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