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Discussion Starter · #1 ·
I wonder if anyone can help! I traveled to fahad's home from premier tuning to have a stage 1 remap, but unfortunately it didn't work it felt slower, fahad spent 2 to 3 hrs trying to find out the problem but he thinks it maybe the air intake sensor I wonder if anyone else has had a problem like this? (he said its the first he couldnt remap! Just my luck :mad: )
Thanks to fahad who tried to sort it and never charged for his time! Hopefully someone has had this problem and can help??
Thanks!
 

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Thats unfortunate. any error codes on the system? what are the symptoms?
 

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Hey Mark, had a long chat with Elite later that day.. consensus is that it's either a weak MAFS or possibly sticking vanes in the turbo. Can honestly say I've never seen that before in a Honda yet.

Honda HDS not showing any errors (apart from sticking IMRC on EGR OFF map, but cleaning it out seemed to resolve that).. but it just felt flat on remap, and better on stock. We verified the stock file to be 100% stock so it must be a weakness in the engine somewhere.

I would suggest just leaving things as they are and not chucking money in to it until any problem manifests itself properly and then you can set about diagnosing.
 

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Discussion Starter · #9 ·
Fahad, What's the chances of it being the mafs?.. Just looked on my average over 5000 miles and it's only 33mpg! But averaged 44mpg over to your place on the motorway!? I'm sure I averaged 40 over the first 10000 miles I did!.. Just been reading about a faulty mafs do it's got me thinking again?
 

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correct me if im wrong but isnt the standard test for a broken maf to disconnect it and if the car runs no worse its bust? or is it not that problematic yet? relic posted some stuff about cleaning the maf but the search engine wont allow 3 letter words like maf or dmf
 

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Cockup Specialist
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12,885 Posts
Option 1 would be an italian tune up ....carbon can clog the vnt vains when it open to areas it doesnt normally reach.

Option 2 would be MAF or MAP sensor both of which contain IAT sensors.

Option 3 would be your software version.
TDI map on mine would not change the fuel rail pressure.
Worked fine on all other cars mapped.
In the end alternative options had to be explored.
You may have the same issue as me.
Not all these ECUs software are identical.
My remapped dyno power sat halfway between stock and where it should have been.
 

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Mick, good point on the software but we've done the same software revision previously without issue.

We did try the italian tune up, but not properly.. could also be MAP sensor, but this is why I'm suggesting Mark doesn't chuck parts at it as diagnosing this way will end up being costly.
 

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Mick, good point on the software but we've done the same software revision previously without issue.

We did try the italian tune up, but not properly.. could also be MAP sensor, but this is why I'm suggesting Mark doesn't chuck parts at it as diagnosing this way will end up being costly.
Might be worth datalogging just to see if the MAP MAF and rail pressure is anywhere near what its meant to be compared to a sample car known to work.
 
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