VX LS1 SS tune

[mattyk]

I've read on these forums that the LS1 tuning, especially the 225kw in the VX is amazingly conservative, considering the LS1 put out 260kw in America on the same configuration...

SO my question is, like the MAFless mail order tunes, is there a stock engine mail order tune that is better optimized? and one that isn't a gimmicky tune?

If so, i'd love to get one, any details would be great!

thank guys.

[wikky]

When you say stock engine, do you mean you have bolt on mods ie. exhaust, CAI etc? Either way, yes you can get a custom mail order tune for a 100% stock car. I don't know why you would though, there's minimal gains to be had (bang for buck).

[mattyk]

Yeh, totally stock car. The reason why i ask is i know it be better to get a whole bunch of simple mods and then get a tune, but i dont believe that you can get a decent tune without dyno work if you have a modded engine... i guess the same can be said about a stock re-tune, but they were made on a stock new-ish car, so one in good condition still would be very close to the specs.

And do you think it wont give much? because i have heard that getting rid of the factory tune with a decent one has a bit better fuel economy and better all round on the power band.. how much would a tune like this cost? id assume not much? for a stock optimized tune?

[hwy747]

I have a VX Berlina LS1, cat back exhaust, alloy cold air intake and mail order mafless tune. The tune itself can be customised to suit your mods. A lot of people on this forum will tell you not to get it done and get a full dyno tune done instead. And yes, a full dyno tune will give you more power but when you compare kw gained to $$ spent, the mail order is a pretty good option. I have had mine in for 6 months now and the power increase was extremely impressive! I haven't had it on a dyno to check figures, but it is quicker than my mates VYII clubby with 285kw. If you were to do it, the otr intake is pretty much a must (but don't get a cheap $200 intake off ebay)

My suggestion would be to speak to the guys who do them and tell you what they can do for a stock engine. May be worth it.

[hwy747]

P.S. fuel economy is much better (now averages 12-13L/100k around town instead of mid 15's) and the tune cost me $150.

[VTLS1]

P.S. fuel economy is much better (now averages 12-13L/100k around town instead of mid 15's) and the tune cost me $150.

who was that through?? cause i heard to be careful with some of those mailorder tunes(except oztrack,heard they are good) just curious as i am thinking of doing the same.

as for a tune without any mods,your choice matey. you might get a bit better fuel economy but not much bang for your buck

[ashbox]

I have a VX Berlina LS1, cat back exhaust, alloy cold air intake and mail order mafless tune. The tune itself can be customised to suit your mods. A lot of people on this forum will tell you not to get it done and get a full dyno tune done instead. And yes, a full dyno tune will give you more power but when you compare kw gained to $$ spent, the mail order is a pretty good option. I have had mine in for 6 months now and the power increase was extremely impressive! I haven't had it on a dyno to check figures, but it is quicker than my mates VYII clubby with 285kw. If you were to do it, the otr intake is pretty much a must (but don't get a cheap $200 intake off ebay)

My suggestion would be to speak to the guys who do them and tell you what they can do for a stock engine. May be worth it.

has your mates had his tuned, is his auto and you do realise that 285 is at the flywheel

[hwy747]

has your mates had his tuned, is his auto and you do realise that 285 is at the flywheel

No he hasn't had his tuned, his is auto and yes I do realise that his is 285 at the flywheel. Stock mine is 225 at the flywheel. As I said, I have not had mine tested, I only mentioned that for comparisons sake!!

VTLS1 - I will find the link of the guys I used and send it to you.

[jakbob]

If you were to do it, the otr intake is pretty much a must (but don't get a cheap $200 intake off ebay)

Whats so bad about the cheap ebay OTRs? I don't see why I should pay much more than $200 for what is really a pretty simple device.

[VTLS1]

Whats so bad about the cheap ebay OTRs? I don't see why I should pay much more than $200 for what is really a pretty simple device.

just gotta be careful of some OTR's,expensive isnt always god & neither is cheap. i have seen some fitted & the bonnet doesnt close properly. i have even seen one cheapo one melted,the bloke had to replace his radiator cause it melted into the top fins. his mechanic reckoned he was lucky the car didnt overheat

[ashbox]

No he hasn't had his tuned, his is auto and yes I do realise that his is 285 at the flywheel. Stock mine is 225 at the flywheel. As I said, I have not had mine tested, I only mentioned that for comparisons sake!!

VTLS1 - I will find the link of the guys I used and send it to you.

theres your answer, most tuned ls1's will keep up with an untuned hsv with an ls1
and i do stress i said MOST not ALL

[DLFHUB666]

Whats so bad about the cheap ebay OTRs? I don't see why I should pay much more than $200 for what is really a pretty simple device.

Hey jakbob
i had 1 of the cheap ebay OTRs had it for about 3 months an it has started to crack along the seem an the gaskets have had it no problem with heat it never melted or wraped but i only used it on the street wouldnt like to take 1 to a track day also fitted perfect . Orderd my ramjet last week should be here soon

[jakbob]

Hey jakbob
i had 1 of the cheap ebay OTRs had it for about 3 months an it has started to crack along the seem an the gaskets have had it no problem with heat it never melted or wraped but i only used it on the street wouldnt like to take 1 to a track day also fitted perfect . Orderd my ramjet last week should be here soon

Is it a plastic or fibreglass one?
Are the aluminium OTRs any good? This one looks alright. HOLDEN VT VX VY VZ SS LS1 GEN3 VCM OTR CAI MAFLES K&N - eBay, Other, Car, Truck Parts, Cars, Bikes, Boats. (end time 08-Oct-10 19:57:59 AEDST)
Anyone know any good cheap ones? Theres no way I can justify $650 on a ramjet.

[DLFHUB666]

Is it a plastic or fibreglass one?
it was a plastic 1 that was about $200 i wouldnt recomend it at all. but as you say you cant justify $650 so give one ago it might last longer than mine but i cant justify $200 every 3 or so months so i just bit the bullet an ordered the ramjet. dont know about the alloy 1s but they look the goods

[Bravotwozero]

Is it a plastic or fibreglass one?
Are the aluminium OTRs any good? This one looks alright. HOLDEN VT VX VY VZ SS LS1 GEN3 VCM OTR CAI MAFLES K&N - eBay, Other, Car, Truck Parts, Cars, Bikes, Boats. (end time 08-Oct-10 19:57:59 AEDST)
Anyone know any good cheap ones? Theres no way I can justify $650 on a ramjet.

I have had one of these fitted to my VY SS for about 3 years. Everybody was selling these at one stage but then they all started bringing out their own units. In a nutshell, great OTR.

[DLFHUB666]

HOLDEN VT VX VY VZ SS LS1 GEN3 VCM OTR CAI MAFLES K&N - eBay, Other, Car, Truck Parts, Cars, Bikes, Boats. (end time 08-Oct-10 19:57:59 AEDST)
the only problem i see with that is that you have to have a mafless tune to use it. so if you dont have a mafless tune there is another $500-$1000 on top of the OTR price at least with the $200 cheapo or the ramjet you can still use the maf. BTW mine is mafless tuned

[VTLS1]

the only problem i ever see with using a metal one is that metal holds it heat & you dont want hot air going in your engine. i was always taught the cooler the air & the more of it,the better performance you get out of your engine

[DLFHUB666]

the only problem i ever see with using a metal one is that metal holds it heat & you dont want hot air going in your engine. i was always taught the cooler the air & the more of it,the better performance you get out of your engine

i dont think it matters weather it is alloy or plastic because it is subjected to the same amount of heat so they would only get as hot as the temp in the engine bay an i would think that the alloy would cool down quicker than the plastic but i dont know so dont quote me.

[jakbob]

I am planning on a mafless tune - part of why I don't want to spend big $$ on the OTR. I think maybe a cheaper fibreglass one would be a good thing?
I like the look of this one: OTR COLD AIR INTAKE HOLDEN HSV VT VX VU LS1 GEN 3 - eBay Other, Air Intake, Fuel Delivery, Car, Truck Parts, Cars, Bikes, Boats. (end time 21-Sep-10 11:57:44 AEST)
Comes with new surround panels so you don't have to butcher up the original radiator cover.

[Bravotwozero]

the only problem i ever see with using a metal one is that metal holds it heat & you dont want hot air going in your engine. i was always taught the cooler the air & the more of it,the better performance you get out of your engine

Why do amplifiers have aluminium heatsinks?

For anybody contemplating a cheap plastic OTR, then watch this short clip.

[DLFHUB666]

Why do amplifiers have aluminium heatsinks?

For anybody contemplating a cheap plastic OTR, then watch this short clip.

so you drive around with out your air filter do you??? thats the only reason it is sucking in like that an i read somewhere that they heated up the otr with a blow tourch or something not 100% on that though.i did a trip from townsville to brisbane in about 13 hrs 3 stops for fuel an when we got to brisbane checked the OTR cheap ebay 1 an it was still frim.

[jakbob]

Why do amplifiers have aluminium heatsinks?

What VTLS1 is trying to say is - aluminium is a good heat conductor - in the same way a heat sink in an amp will conduct heat away from the hot components and disperse it into the air, an aluminium otr may conduct heat from the engine bay into the air flowing through it.

[VTLS1]

What VTLS1 is trying to say is - aluminium is a good heat conductor - in the same way a heat sink in an amp will conduct heat away from the hot components and disperse it into the air, an aluminium otr may conduct heat from the engine bay into the air flowing through it.

exzacary i culdnt have put it better meself

[Bravotwozero]

I think dissipate is the word you're after. There would be no difference between plastic or aluminium. They would both suffer the same issues with heat while stationary but would be fine when moving. Drive around with either OTR then stop and pop the bonnet. They would be both stone cold.

[DLFHUB666]

^^^