Air pump delete??

wagon dec

wagon dec

Member Number 257
As most of you know I'm in the process of repairing my forester after a timing belt break. But I would like to know while the motor is out should I delete the air pump system??
Pros and cons for it any of you done it to your 2.5
Mine is going to be mapped anyway so just wondering if I should do it [emoji106] 20190315_213815.jpeg

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totally agree, absolutely no point having them in - they only work first few minutes after start 'kickstarting' the catalyst, after car warms up, no point having them - but they fail, and when they do, its expensive - I had it on my RX back few years back and it gave me some headaches.

Get rid of it, block it, map it out and be done with it
 
I've replaced both valves, the compressor twice, and the relay for the compressor twice. Could be just unlucky.
My wagon also being a RX meant I couldn't map it out.
As above, if things go wrong, your pocket will feel it.
I think I'd map it out, Dec, and sell the parts.
 
Gary sti said:
What?s the downside to taking this out ??
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Slightly higher emissions for first 90 seconds after cold start. And by slightly higher emission I mean negligible difference, but Subaru needed to install those to fit into strict emission limits set by EU to even sell the cars on EU markets
 
Zheiko said:
Slightly higher emissions for first 90 seconds after cold start. And by slightly higher emission I mean negligible difference, but Subaru needed to install those to fit into strict emission limits set by EU to even sell the cars on EU markets
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It means the cat takes longer to heat up. Some people say that over time it kills the cat by allowing too much fuel to sit in it while it gets up to temperature but I think that?s a big exaggeration, I don?t hear of it causing any issues.
 
Fozzy said:
It means the cat takes longer to heat up. Some people say that over time it kills the cat by allowing too much fuel to sit in it while it gets up to temperature but I think that?s a big exaggeration, I don?t hear of it causing any issues.
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I dont think its true - the heat that comes afterwards will burn everything off of it anyways. The cars up to the 2006+ didnt have it at all, and at the end of the day - I was quoted 1400euro from Subaru to get the air system fixed - thats way more than what you would pay for new catalyst, which will probably fail more than 5 years later(if even).

As far as I know, what kills catalyst is not enough heat generated, but with our cars and our way of driving, I dont think thats an issue - unless you drive like a granny up to 2000rpm all the time, then it may be an issue - but not something the air system would prevent anyways
 
Thanks for the input lads. I will get rid of it all and let Aonghus turn it off when he is mapping it [emoji106]

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