Intake fitted S3.....down on power again!

I've had various intakes on my Golf R and customers have had many different types on their cars.
Don't get too hung up on the MAF readings. Your LTFT's really ought to be under 10 though.
 
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Yeah I'm on a steep learning curve with all this....... ltft's, g/s, maf placement etc but I do feel atm the car runs better with the stock intake:yum:
 
-Ju- said:
Have you done any vcds logs?
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No but I've never had any issue with it so no need to. Taking readings from the maf with any aftermarket intake is daft anyway, all the dimensions within the pipe are different so basically the maf isn't callibrated for the pipe it's sat in.

Have you put cooler plugs in or reduced the gap on the spark plugs? I was told by APR that the extra boost generated can blow out the spark
 
Yes but the diameter of the maf housing on an aftermarket intake should mirror the oem setup otherwise it will play havoc with the fuel mixture. A well calibrated intake will give accurate maf readings.
As for plugs, i"ve gone with standard ones changed more frequently, seems to be the general concensus for whats best
 
-Ju- said:
Yes but the diameter of the maf housing on an aftermarket intake should mirror the oem setup otherwise it will play havoc with the fuel mixture. A well calibrated intake will give accurate maf readings.
As for plugs, i"ve gone with standard ones changed more frequently, seems to be the general concensus for whats best
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Rick @ Unicorn Motor Dev. said:
Just had a Cupra on the Dyno, 245g/s. ITG intake, 330bhp.

10475837_952133998144664_3081875102879086479_n.jpg
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From here: http://www.audi-sport.net/xf/threads/whats-your-mapped-maf-g-s-readings.238567/

Shows how you can't rely on the 0.8 method to get a power figure
 
-Ju- said:
Well its back off for now!
Not sure whether or not the ITG was actually revised, I know the VWR was but then that has a slightly different design.
This is the ITG
Click to expand...
I thought I read about the vwr/itg type intakes were modified as the fuel trims were terrible.
Revo isn't perfect either although they rarely read above 8-9
Standard intake reads less than 2 hence they feel much better.
 
Marshy said:
I thought I read about the vwr/itg type intakes were modified as the fuel trims were terrible.
Revo isn't perfect either although they rarely read above 8-9
Standard intake reads less than 2 hence they feel much better.
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Even that's a revision of the original ITG.

The pic I posted above was the first generation
 
See I thought the enclosed itg was just rebranded vwr intake so in theory both the same part?
 
Marshy said:
See I thought the enclosed itg was just rebranded vwr intake so in theory both the same part?
Click to expand...
I think the vwr has a smaller diameter 70mm ish metal pipe that comes all the way from the filter to the maf, whereas the itg i've got has a larger 100mm bore all the way from the fiter to the maf
 
I'm running stage 1 apr map and the forge twintake.. Simply for the way it looks more than anything.. Running the apr 3.1 revision software and have had no issues whatsoever (touch wood).. I've also checked my LTFT and they're running around the 8 mark.. Little high but acceptable imo...

Seems strange to me and it doesn't sound like the intake is your issue...

I've not checked them in a wee while though, i'll check soon though and report back
 
My s3 felt noticably better and quicker when i had my REVO intake fitted, stock air box is lame in my opinion, ive mot had time to stge 2+ map mine yet been to busy ;-( but i have all the hardware to do it jist need to fit the pump when i actually get it booked it,

But stock airbox is lame and liek everyone else has said above, each change requires map adjustments which is why generic maps arnt good always best to go for custom maps mate
 
S3_Jacko said:
I'm running stage 1 apr map and the forge twintake.. Simply for the way it looks more than anything.. Running the apr 3.1 revision software and have had no issues whatsoever (touch wood).. I've also checked my LTFT and they're running around the 8 mark.. Little high but acceptable imo...

Seems strange to me and it doesn't sound like the intake is your issue...

I've not checked them in a wee while though, i'll check soon though and report back
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Have you checked airflow with vcds?
I wonder if my fuel pump is struggling at stage 2, maybe its time to change?
 
TDI140 said:
My s3 felt noticably better and quicker when i had my REVO intake fitted, stock air box is lame in my opinion, ive mot had time to stge 2+ map mine yet been to busy ;-( but i have all the hardware to do it jist need to fit the pump when i actually get it booked it,

But stock airbox is lame and liek everyone else has said above, each change requires map adjustments which is why generic maps arnt good always best to go for custom maps mate
Click to expand...
Yes I get the point about custom maps, its just to me a generic map from a reputable tuner will be researched and developed, whereas with a custom map your putting your faith in the operator that he knows what he's doing.
 
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I think I may have got to the bottom of my high end misfire and low maf flow issue when fitting an intake.
Basically there was a problem around 08/09 for K04 cars with exhaust valve spring float. An Audi TSB was issued for this and basically means the springs are slightly weaker and at high rpm can cause misfires which usually manifests itself as a misfire on the exhaust valve on cylinder 3, that is what I got.

APR are aware of this and as I believe , so are Revo.
There is mention of a different tune available from APR that works around this issue by dropping the output high up in the rev range, or you can get the springs changed for the revised versions.
Has anyone had any experience of this or can link to the TSB as most of the links I've found are dead!
 
I thought the valve spring issue was before that age.
Why does it not do it on standard airbox?
I'm not sure that's your issue.
You could always remove your cam cover and check the colour of yours.
 
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Thougt I'd just revisit this thread just to say where I'd got with it.
Yep it had nothing to do with the valve springs, that was just clutching at straws!
I decided to try and modify what I had, to work with an oem maf housing. I got hold of one from a B7 A4 tfsi, this is round and fits onto the itg turbo inlet pipe. I then bought an 80mm to 90mm silicone hose to connect back up to the rest of the intake kit.
So how does it fair now?
Well midrange it really takes off but top end was still struggling. After taking the filter out of the housing, I found it to be caked up in allsorts of crud.
Having no cleaner/re-oil, I just gave it a quick wipe off and it's almost flowing the same as the panel filter now but with more get up and go lower down.
The other thing is the long term fuel trim, it's sat at 5.5!
I would say that is a result:arco:
 
-Ju- said:
Thougt I'd just revisit this thread just to say where I'd got with it.
Yep it had nothing to do with the valve springs, that was just clutching at straws!
I decided to try and modify what I had, to work with an oem maf housing. I got hold of one from a B7 A4 tfsi, this is round and fits onto the itg turbo inlet pipe. I then bought an 80mm to 90mm silicone hose to connect back up to the rest of the intake kit.
So how does it fair now?
Well midrange it really takes off but top end was still struggling. After taking the filter out of the housing, I found it to be caked up in allsorts of crud.
Having no cleaner/re-oil, I just gave it a quick wipe off and it's almost flowing the same as the panel filter now but with more get up and go lower down.
The other thing is the long term fuel trim, it's sat at 5.5!
I would say that is a result:arco:
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Out of interest did you ever scan the car with vagcom to see what the missfire was all about?

Mine was scanned this weekend after experiencing a misfire around 5000rpm near enough each time on WOT.

The fault code that was displayed is that the fuel rail pressure is too low.

I've noticed on APR's website that anything above stage 1 requires an uprated HPFP and I'm guessing that's the route of the misfire high up in the rev range.
 
Not changed the hpfp on mine at atage 2 unless it was done before I got it (had a full milltek on), anyway of checking?
The misfire was just that, a misfire code due to the poor flow/fuel trims on the twintake, not fuel related.
 
-Ju- said:
Not changed the hpfp on mine at atage 2 unless it was done before I got it (had a full milltek on), anyway of checking?
The misfire was just that, a misfire code due to the poor flow/fuel trims on the twintake, not fuel related.
Click to expand...

Visually apart from taking the HPFP apart and inspecting I'm guessing not.

However what I'm saying is apr's maps are torquey maps and to gain that torque it normally needs an uprated pump, hence why 2+ gives us the better "midrange torque".

Considering mine has the revo intake and bcs powervalve the engine physically can't breathe anymore than it already is, and those mods are proven to be fine on other cars.

I'm thinking apr maps require a different way of tuning like starting with the intake and HPFP first as that's the mods required for the stage that they call 1+ (roughly 340hp, known as stage 2 in revo terms). Apr state the exhaust isn't required until stage 2+ so it's a bit upside down compared to the way other tuners work.
 
Quoting from APR's website:

apr-s1.png

APR’s Stage I+ ECU Upgrade requires an APR High Pressure Fuel Pump and is designed for vehicles with little to no other modification. Expect higher peak numbers of 337 horsepower and 337 ft-lbs of torque, but also gains of up to +77 horsepower and +81 ft-lbs through the power band when combined with APR's intake specific software and the VWR Intake System.

apr-s2.png

APR’s Stage II+ ECU Upgrade requires an APR High Pressure Fuel Pump, at least an APR Downpipe Exhaust System but is optimized for APR’s full RSC Exhaust System and the VWR Intake System. Expect higher peak numbers of 362 horsepower and 370 ft-lbs of torque, but also gains of up to +103 horsepower and +111 ft-lbs through the power band with all of these modifications.
 
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Thats interesting, may have to give Awesome a bell and find out whats happened to stage 2!
 
It may of been a dirty air-cleaner all along. :unhappy:
The 1st things I always check are, Air cleaner, fuel filter, plugs, vac leaks, oil (dipstick sealing)
 
No cos the fuel trims were up around 17 before I modified it
 
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