Air intake

[michaelb]

I knew it wouldn't be straightforward lol will it really effect the performance then?

[shnazzle]

I knew it wouldn't be straightforward lol will it really effect the performance then?

Nah. Just don't become obsessed with fuel trims like me. 
You'll feel a difference when you install it. And in your mind, with the noise it'll feel faster Then slowly the ECU will adjust the fueling to get the air/fuel ratios where they're supposed to be.

[michaelb]

The ecu will adjust itself? I see Dan has a unichip q for sale, would you recommend one? I have tried to get in touch with the unichip dealer in NI but they don't respond, I think they may be out of business, which would leave me with a piggyback ecu, with an aggressive map on it, that I can't remap!

[shnazzle]

The ecu will adjust itself? I see Dan has a unichip q for sale, would you recommend one? I have tried to get in touch with the unichip dealer in NI but they don't respond, I think they may be out of business, which would leave me with a piggyback ecu, with an aggressive map on it, that I can't remap!

Nope, just enjoy the noise mate The change is well within range of what the ECU can compensate for without noticeable ill effect.
In fact, logically speaking, the conversation between MAF, o2 sensors and ECU would go like so:
MAF: Hello ECU, this is how much air I'm getting in
ECU: WTF...that's not what I was expecting mate. *sigh*. Never mind, I'll sort it out once Mr O2 tells me what's up
...(time passes)
O2: AAhhhh, ECU! Dude! There's like far too much freakin air in yo shizzle. Cut it out! give me some fuel
ECU: wtf man, MAF told me to put this much fuel in...so I did. Now you're whigning on.
O2: Aye, fix it.
ECU: MAF man..you kn0b. How about you just tell me how much air is actually coming in!
MAF: I can't!! Owner changed me   I'm blind. BLIND I tell you!!
ECU: Fine...as usual...I get to sort out the crap. O2, how much more air is there?
O2: can't say for certain, all I know is it's too much.
ECU: Ok...*adds fuel* How about now?
O2: TOO MUCH!!! TOO MUCH!! I'm meeeltiing I'm meeeeeeelltiiinngg
ECU: dude chill...it was only a bit of fuel. Here. Better now?
O2: That'll di geeza. That'll di.
ECU: We all friends now?
MAF: ...could give me my eyes back like.
ECU: Well I can't so STFU.

[michaelb]

Hahahaha that's brilliant!!!

[michaelb]

Will it make my engine light come on then? If the o2 sensor thinks something's up? I ask as it goes for mot in a few weeks

[shnazzle]

Will it make my engine light come on then? If the o2 sensor thinks something's up? I ask as it goes for mot in a few weeks

Nah. As I said, the adjustment is 10%. Actual adjustment may be a little less even. Fuel trims can go up to about 25 long term and another 15 short trim (I think.. Might be more) before it throws a code. So, TONS of room for adjustment.

As I said don't worry about it

[michaelb]

Sweet! Thanks mate!!

[1979scotte]

The ecu will adjust itself? I see Dan has a unichip q for sale, would you recommend one? I have tried to get in touch with the unichip dealer in NI but they don't respond, I think they may be out of business, which would leave me with a piggyback ecu, with an aggressive map on it, that I can't remap!

Nope, just enjoy the noise mate The change is well within range of what the ECU can compensate for without noticeable ill effect.
In fact, logically speaking, the conversation between MAF, o2 sensors and ECU would go like so:
MAF: Hello ECU, this is how much air I'm getting in
ECU: WTF...that's not what I was expecting mate. *sigh*. Never mind, I'll sort it out once Mr O2 tells me what's up
...(time passes)
O2: AAhhhh, ECU! Dude! There's like far too much freakin air in yo shizzle. Cut it out! give me some fuel
ECU: wtf man, MAF told me to put this much fuel in...so I did. Now you're whigning on.
O2: Aye, fix it.
ECU: MAF man..you kn0b. How about you just tell me how much air is actually coming in!
MAF: I can't!! Owner changed me   I'm blind. BLIND I tell you!!
ECU: Fine...as usual...I get to sort out the crap. O2, how much more air is there?
O2: can't say for certain, all I know is it's too much.
ECU: Ok...*adds fuel* How about now?
O2: TOO MUCH!!! TOO MUCH!! I'm meeeltiing I'm meeeeeeelltiiinngg
ECU: dude chill...it was only a bit of fuel. Here. Better now?
O2: That'll di geeza. That'll di.
ECU: We all friends now?
MAF: ...could give me my eyes back like.
ECU: Well I can't so STFU.

Best ROC post bar none.

[michaelb]

It's class isn't it!!

[dan944]

Love that post!! 
I'm currently running a fraction of boost and the ecu is dealing with it pretty well with no issues.
Clever things!!

[Call the midlife!]

The ecu will adjust itself? I see Dan has a unichip q for sale, would you recommend one? I have tried to get in touch with the unichip dealer in NI but they don't respond, I think they may be out of business, which would leave me with a piggyback ecu, with an aggressive map on it, that I can't remap!

Nope, just enjoy the noise mate The change is well within range of what the ECU can compensate for without noticeable ill effect.
In fact, logically speaking, the conversation between MAF, o2 sensors and ECU would go like so:
MAF: Hello ECU, this is how much air I'm getting in
ECU: WTF...that's not what I was expecting mate. *sigh*. Never mind, I'll sort it out once Mr O2 tells me what's up
...(time passes)
O2: AAhhhh, ECU! Dude! There's like far too much freakin air in yo shizzle. Cut it out! give me some fuel
ECU: wtf man, MAF told me to put this much fuel in...so I did. Now you're whigning on.
O2: Aye, fix it.
ECU: MAF man..you kn0b. How about you just tell me how much air is actually coming in!
MAF: I can't!! Owner changed me   I'm blind. BLIND I tell you!!
ECU: Fine...as usual...I get to sort out the crap. O2, how much more air is there?
O2: can't say for certain, all I know is it's too much.
ECU: Ok...*adds fuel* How about now?
O2: TOO MUCH!!! TOO MUCH!! I'm meeeltiing I'm meeeeeeelltiiinngg
ECU: dude chill...it was only a bit of fuel. Here. Better now?
O2: That'll di geeza. That'll di.
ECU: We all friends now?
MAF: ...could give me my eyes back like.
ECU: Well I can't so STFU.

Best ROC post bar none.

+ 3 on that. For someone like me who wants to be able to understand more but gets lost in the science that actually helped me understand the relationship between the components more betterer.
Patrick should do a "For Dummies" book!


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[michaelb]

Yeah it's like a story I'd read my kids, minus the swearing lol

[Call the midlife!]

The ecu will adjust itself? I see Dan has a unichip q for sale, would you recommend one? I have tried to get in touch with the unichip dealer in NI but they don't respond, I think they may be out of business, which would leave me with a piggyback ecu, with an aggressive map on it, that I can't remap!

Nope, just enjoy the noise mate The change is well within range of what the ECU can compensate for without noticeable ill effect.
In fact, logically speaking, the conversation between MAF, o2 sensors and ECU would go like so:
MAF: Hello ECU, this is how much air I'm getting in
ECU: WTF...that's not what I was expecting mate. *sigh*. Never mind, I'll sort it out once Mr O2 tells me what's up
...(time passes)
O2: AAhhhh, ECU! Dude! There's like far too much freakin air in yo shizzle. Cut it out! give me some fuel
ECU: wtf man, MAF told me to put this much fuel in...so I did. Now you're whigning on.
O2: Aye, fix it.
ECU: MAF man..you kn0b. How about you just tell me how much air is actually coming in!
MAF: I can't!! Owner changed me   I'm blind. BLIND I tell you!!
ECU: Fine...as usual...I get to sort out the crap. O2, how much more air is there?
O2: can't say for certain, all I know is it's too much.
ECU: Ok...*adds fuel* How about now?
O2: TOO MUCH!!! TOO MUCH!! I'm meeeltiing I'm meeeeeeelltiiinngg
ECU: dude chill...it was only a bit of fuel. Here. Better now?
O2: That'll di geeza. That'll di.
ECU: We all friends now?
MAF: ...could give me my eyes back like.
ECU: Well I can't so STFU.

Best ROC post bar none.

+ 3 on that. For someone like me who wants to be able to understand more but gets lost in the science that actually helped me understand the relationship between the components more betterer.
Patrick should do a "For Dummies" book!


Sent from my iPhone using Tapatalk

Slightly off topic but semi relevant and I know I stands a chance of an answer.
I habitually use my battery cut out switch through the week as I don't make use of the 2. Stupid question but does that reset the ECU everytime or do I have to disconnect both terminals?


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[dan944]

I may be wrong but I think it will reset it. Again may be wrong but I believe that the ECU draws a tiny amount of current as a Hold up to save data.

Unless the ECU has a hold up battery of its own in which case it may last long enough to stay alive between charges? 

But I doubt the latter.

[Call the midlife!]

I may be wrong but I think it will reset it. Again may be wrong but I believe that the ECU draws a tiny amount of current as a Hold up to save data.

Unless the ECU has a hold up battery of its own in which case it may last long enough to stay alive between charges? 

But I doubt the latter.

Cheers, I know it's the norm to disconnect it for 10 minutes after adding mods etc to reset it but as my cut off only works on the Negative I'm not sure that's the same as disconnecting.


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[dan944]

I want to say it should. It should be stopping current flow. Throw up an EML and see if it clears it. Lol.

[shnazzle]

Yup. There's enough charge in there once you disconnect for about 10 mins of memory retention, then it's ecu memory bye bye

[Call the midlife!]

Yup. There's enough charge in there once you disconnect for about 10 mins of memory retention, then it's ecu memory bye bye

But does it have to be both poles disconnected for that? Not just the neg cutoff.


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[dan944]

No, one is fine thinking about it. I only ever whip one terminal off if I'm leaving it and mine was started up about 5 times in the 18 months she was off the road.
After the first time I reconnected the EML had disappeared but I know the fault had not. Therefore, ECU reset.

[Call the midlife!]

No, one is fine thinking about it. I only ever whip one terminal off if I'm leaving it and mine was started up about 5 times in the 18 months she was off the road.
After the first time I reconnected the EML had disappeared but I know the fault had not. Therefore, ECU reset.

Sounds about right, cheers.


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[michaelb]

Got the K&N fitted, on start up, don't notice much change in noise as my tte exhaust makes a good note but after 3-4k rpm you can hear it kick in!

[shnazzle]

Got the K&N fitted, on start up, don't notice much change in noise as my tte exhaust makes a good note but after 3-4k rpm you can hear it kick in!

Smile-inducing isn't it?

[michaelb]

I just had a blast with the top down and as you push on a bit, it has this extra snarl and it is definitely smile inducing!