Orssom OTR intake opinion?
Hi, I know there have been threads about this but I'm wondering has anyone got one WITHOUT a tune? I have a 2011 SS and I DON'T want to mafless tune the car, I hear intake temps are much cooler than stock airbox when stationary? Do they make much difference to power? I bought one for looks and some decent induction noise as the stock set up makes it sound like its sucking through a straw.. I want it to sound like a real 6 liter. Some on the market look dodgy and others need the radiator to be tilted which seems unprofessional to me and sacrifices radiator cooling performance.
Thanks in advance.
I think if you bought an OTR for looks then you're missing the point.... And to get some induction noise....
Yeah, adding an OTR will do these things. But the purpose is to improve air flow first and foremost.
I have 4 different air setups in mine. A SS inductions growler to start, then ORRSOM, then Ziggy, and now VCM. I thought they were all good. The Ziggy one seemed to make more induction noise and the VCM one seems more responsive.
As for tilting the radiator, I used to think the same. However, the VCM for example only requires the radiator to be shifted slightly, has some great custom brackets and reuses some existing holes and bolts
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Thanks for your response, I see where your coming from however I don't want to push my luck with warranty and the orssom seemed to look more stealthy and neat. Yes I do have an objective of getting more cold air but I wanted to tick the most boxes when it came to choice.. Bottom line anything would be better than the air box? Would you agree?
Think about it,
There is a small risk your car will throw a warning light after installation. Your CPU will try and adjust to handle the changed air flow. Do you have an aftermarket exhaust fitted also? This combined with the OTR might push the table outside of its self adjustment parameters and require a retune. You can tune to retain the MAF, so no need to go mafless if you don't want too.
Dave
Is this it?
Well apparently the intake has turned up so my house mate tells me, that's very interesting thanks for that but mafless tuning voids warranty... Where as intakes generally don't. As for an exhaust I have straight through stainless steel mufflers but the rest is factory gave it a good note and rumbles a bit so I'm happy, I'll see what happens when I install it I guess.
Cheers.
You show me a Holden tech who can prove your car has a mafless tune.... As for voiding warranty, I'd change dealers if yours won't warranty your car with a mafless tune. Mine had full warranty with all my mods including cam (ok that changed when I went to a different dealer for something and those pricks informed Holden of such items which in turn voided all warranty). I understood all modded components weren't covered but Holden did cover the rest
Got Milk ???
He is saying you can get a Maf tune, an keep the Maf. You really need a tune to get the best out of your mods. Weather it be a Maf or Mafless one. Because there is no point buying all this stuff an not getting a tune to suit, but hey it's your money do as you please.
Take it easy...But do take it...
Do not argue with an IDIOT.
He will just drag you down to his level an beat you with experience.
Some people take me the wrong way, Like smacking up Marijunna.
Got Milk ???
Takes all of 2 sec's. does it have a maf? no, must have a Mafless tune. not hard at all.Originally Posted by bonners
Edit: Oh an if your one of these people that got a mafless tune an kept the Maf in place you FAIL. 1 of the point's of a mafless tune is to get rid of the Maf which is a restriction.
Take it easy...But do take it...
Do not argue with an IDIOT.
He will just drag you down to his level an beat you with experience.
Some people take me the wrong way, Like smacking up Marijunna.
Interesting.. I was told by a mate who works for Holden that tech 2 can detect weather the ecu has been played with or not.. If that's right I don't know I'm assuming it would be because wouldn't everyone be mafless tuning? How much is a mafless tune worth? What's involved? Any new computers or what? Can I tune whilst keeping the maf if I wanted to? I couldn't care less about the maf I'm just worries that if I spun a bearing or dropped a piston out the side etc.. Something really bad Holden could turn around and say well if you didn't play around with it and pump more power out of it this wouldn't of happened.. Then I'm stuck with a repair bill to rebuild an engine.. AS AN EXAMPLE of course..
Got Milk ???
Did you read any of my last two post's??????
Take it easy...But do take it...
Do not argue with an IDIOT.
He will just drag you down to his level an beat you with experience.
Some people take me the wrong way, Like smacking up Marijunna.
Well if it's a mafless tune then clearly the maf will be missing.. Quite obvious? Bottom line the intake must be better than the airbox set up regardless of tune.
Think about it,
The airflow restriction caused by the heating elements within the MAF are insignificant. MAFLESS tunning was a response to blow back pressure from with in the manifold causing misreadings by the MAF.
This was deleted and instead the MAP (manifold absolute pressure) sensors was used to calculate Fuel and Air requirements combined with RPM and throttle position.
Retaining the MAF, but getting a MAFless tune provides air temperature to the ECU, add this info to the MAP readings and you have overcome this issue. Running MAP only, fools the engine into over fueling. Which you may have experienced, cars exhaust crackle on overrun or gear change as un burnt fuel ignites in the exhaust system itself.
In the states larger diameter MAF's are fitted in preference to deleting it, MAFLess tunning became popular after the HSV GTS LS1 was release fitted with Callaway-developed C4B version of that engine running in MAFless.
Both styles of tunning have their advantages and disadvantages, it becomes a matter of preference. If you modify your car, tuning it is always recommended for reliability of components, drivability, and maximising the results of the mods.
Dave
Is this it?
Thanks mate sounds like you know your sh@t lol, but even without any sort of tune the OTR must be better than the stock airbox set up?
Also My uncle had a Calloway engine and yes your right it had no MAF.
Got Milk ???
Please explain how you get a MAFLESS tune an keep the Maf working? an if the Maf is telling the ecu what the airtemp is what is the point of the IAT sensor.
An it not the wire's that are the restriction it is the size of the Maf itself but as you have said people have overcome this by adding bigger Mafs an it's not so much a restriction on the ls2 as i was on the ls1s. but to me a restriction is a restriction.
Take it easy...But do take it...
Do not argue with an IDIOT.
He will just drag you down to his level an beat you with experience.
Some people take me the wrong way, Like smacking up Marijunna.
Hmmm... Not if you knock the middle out of it as some do and unplug it. Simply becomes a piece of pipe.
And most who know my car would know I hardly keep any unnecessary junk in the engine bay.
Oh, and why do they do it? Because their scared Holden will know. As I said Holden had no problems with mine. The reason I do now is unrelated. Also, think about those who get their car worked on pre delivery by Walkinshaw. I'm pretty sure Walkinshaw offer a mafless tune
Think about it,
OTR's are arguably the best for airflow, shorter distance to travel, less heat soak because of size and pluming, larger air filter size etc. The Orssom OTR is made from the same ABS plastics as other parts in the engine bay so it doesn't look out of place. Also uses factory screw points so no drilling or the need to tilt the radiator back for installation.
You should get a modest increase in power & torque, with the torque able to improve fuel economy. It's one of the first things many people change.
Dave
Is this it?
Got Milk ???
Yes, but unless you bore out (is that what you ment by knock the millde out) the Maf it is still a restriction.
Take it easy...But do take it...
Do not argue with an IDIOT.
He will just drag you down to his level an beat you with experience.
Some people take me the wrong way, Like smacking up Marijunna.
Yes mate, some take the whole lot out and just leave the outer.
Think about it,
MAF sensors have thermistors which measure temperature.Please explain how you get a MAFLESS tune an keep the Maf working? an if the Maf is telling the ecu what the airtemp is what is the point of the IAT sensor.
I never mentioned the IAT.
The MAF no longer has input on fuel calculations, this is now performed by the MAP.
Dave
Is this it?
Just to give you some information...
I bought a second hand Orssom intake, and I fitted it up without a tune. (I am planning on getting a tune, I have just finished upgrading the exhaust, and will do so soon)....
The car didnt throw up any fault codes, however the car was very un-drivable....
The more I drove the vehicle, the worse the idle got, throttle response was all over the shop, and I ended up removing the OTR after 2 days.
It took a week of driving for the ECU to return back to normal.
The main problem was idle. Most of the time, idle would be around 1500 to 2000 RPM.
On a V8 in Sydney peak hour traffic, that meant I drove around 15Kms to work pressing the accelerator pedal a total of two or three times.....
Basically I was friving the car on the brake...
So the short answer is, yes, you are going to need a tune. It wont throw codes, but it wont be drivable either...
Hope this helps...
Growing Old Disgracefully
The guy that tuned mine WITH the MAF said they will flow more than enough for a stock engine. He said that you can get a sweeter tune with the MAF in place. He tuned mine from 270rwhp to 330rwhp with the MAF in place. I put a pod type CAI on mine, could feel the difference straight away, no dramas with the idle or fuel economy. It makes more than enough induction noise when you mash the go pedal.
Reviled did i live as evil i did deliveR
- UNDERSTEER is when you hit the wall with the front of the car.
- OVERSTEER is when you hit the wall with the rear.
- HORSEPOWER is how fast you hit the wall.
- TORQUE is how far you take the wall with you.
Growing Old Disgracefully
as i said, you can get a tune with the MAF in place, and it works well. Holden will know if you have had it retuned, and they can very easily overwrite the tune if they decided to "update" the engine management ( this was told to me by the guys who now do my servicing because Holden charge too friggin much)
As for spinning a bearing, i can't see it happening unless you are going to open your rev limiter out to 8,000rpm.
Reviled did i live as evil i did deliveR
- UNDERSTEER is when you hit the wall with the front of the car.
- OVERSTEER is when you hit the wall with the rear.
- HORSEPOWER is how fast you hit the wall.
- TORQUE is how far you take the wall with you.
Calais man
I was told evey time ou drive your car with the MAF unpluged (removed for MAFless tune) the computer logs the data and Holden will know, even if you put the stock tune back on it. The computer will log it was driven for say 40,000km's with no MAF.
just what I heard I could be wrong
As for idle problems etc a friend of a friend has a GTS with no tune and his is fine.. I now n
Have it on the car are the throttle response and power has increased for sure!!
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