All Things Mk5 > Performance Modifications
Intake waste of money?
Charlie23:
Just to add my 2pence worth that might help out.
I'm APR stage 1 and had a Evoms fitted a day after the map and the car sounded great but couldn't really say it made a difference but the noise felt like it was. Anyway I started to get compressor surge had it Rolling road etc etc and spoke to a very clever guy that told me I was getting to much cold air, that's what's causing your surge sound between 2500 & 4000 rpm.
After a few days I though nah can't be right. Few more days passed with it playing on my mind, to much cold air I didn't want to believe it, so I took the Evoms off and put standard air box back on and bought a Pipper Cross panel filter. All I can say is wow, the difference is unbelievable.
No more surge, no more stupid boost leak sound, the revs pic up a lot faster and the car just feel and seems to run a whole lot better. And put a smile back on my face.
The very clever guy I spoke to tunes cars for Racing etc and fair play knew his stuff, and told ,me the only way you will benefit from a CAI is when you get to stage 2+ as the map, fueling etc all alter so the extra air is needed, but at stage one its not worth the money and also alters the performance.
I know some people might not agree but that just my view and my findings from having Evoms and then Pannel filter so thought it might help someone out. :happy2:
pudding:
--- Quote from: Charlie23 on December 15, 2016, 03:01:27 am ---Just to add my 2pence worth that might help out.
I'm APR stage 1 and had a Evoms fitted a day after the map and the car sounded great but couldn't really say it made a difference but the noise felt like it was. Anyway I started to get compressor surge had it Rolling road etc etc and spoke to a very clever guy that told me I was getting to much cold air, that's what's causing your surge sound between 2500 & 4000 rpm.
After a few days I though nah can't be right. Few more days passed with it playing on my mind, to much cold air I didn't want to believe it, so I took the Evoms off and put standard air box back on and bought a Pipper Cross panel filter. All I can say is wow, the difference is unbelievable.
No more surge, no more stupid boost leak sound, the revs pic up a lot faster and the car just feel and seems to run a whole lot better. And put a smile back on my face.
The very clever guy I spoke to tunes cars for Racing etc and fair play knew his stuff, and told ,me the only way you will benefit from a CAI is when you get to stage 2+ as the map, fueling etc all alter so the extra air is needed, but at stage one its not worth the money and also alters the performance.
I know some people might not agree but that just my view and my findings from having Evoms and then Pannel filter so thought it might help someone out. :happy2:
--- End quote ---
It doesn't surprise me to be honest. Factory cars are tuned from intake snorkel to tailpipe as one big symbiotic whole. One thing affects the other, sometimes in a good way, sometimes in a bad way, but all things are considered to give the best compromise. A good example of this was in my R32 days, binning the OEM cats absolutely killed the bottom end torque. VW factored in that 'restriction' to the overall tuning. It's hard to believe such a simple change can have such an adverse affect, but fluid dynamics must rate second to brain surgery and rocket science for complexity.
It's often reported that K04s surge around 23-34psi at 3000rpm, just because: it's what they do, but no one ever says with what intake or exhaust. So thanks for bringing some extra info to the table :) Mine doesn't surge either and I also run the factory air box. I am extremely reluctant to change it, even with the TTE420 upgrade I've got planned.
The thing that separates the good aftermarket parts from the bad ones is R&D. TyrolSport and VW Racingline are good examples of decent R&D. Expensive, sure, but they don't take anything away from the car's original character, only improve on it.
Glad you've found a compromise you're happy with :happy2:
bonelorry:
I can't say I am experiencing any negative effects running a Revo Intake, I am a big fan of running the OE Airbox and have done on previous cars but on the Golf R I plan on going beyond Stage 1 and so the Airbox has had to go.
I saw an Audi S3 8P in at R-Tech recently for a Stage 2 Map, Hardware wise it had a Full BCS Turbo Back Exhaust but was running the stock Airbox. It made 317BHP & 332LB/FT.
Another S3, Similar car but Stage 1 with the Pre-Cat removed and running a Revo Intake....330BHP & 338LB/FT.
Niki said that the Hardware was holding the Stage 2 powered car back, It should have been around the 340BHP mark.
I know they are different cars and not all cars perform the same.
If I could have got away with keeping the stock airbox and going Stage 2 or 2+ then I would have but it will become a Major restriction at those levels.
Shoduchi:
Now I'm not feeling that bad for the 335,5 CV and around 337 lbft my engine makes with the octane booster and ITG panel filter, full 3" TBE and a LOBA HPFP. :smiley:
pudding:
--- Quote from: bonelorry on December 15, 2016, 10:46:50 pm ---I can't say I am experiencing any negative effects running a Revo Intake, I am a big fan of running the OE Airbox and have done on previous cars but on the Golf R I plan on going beyond Stage 1 and so the Airbox has had to go.
I saw an Audi S3 8P in at R-Tech recently for a Stage 2 Map, Hardware wise it had a Full BCS Turbo Back Exhaust but was running the stock Airbox. It made 317BHP & 332LB/FT.
Another S3, Similar car but Stage 1 with the Pre-Cat removed and running a Revo Intake....330BHP & 338LB/FT.
Niki said that the Hardware was holding the Stage 2 powered car back, It should have been around the 340BHP mark.
I know they are different cars and not all cars perform the same.
If I could have got away with keeping the stock airbox and going Stage 2 or 2+ then I would have but it will become a Major restriction at those levels.
--- End quote ---
Is the airbox bad on the Golf R then? I've seen a few videos on shopdap.com of various MK7 upgrades and they look pretty decent!
Tbh, that is just one tuners findings and it kind of puts into debate as to whether or not a full 3" TBE is worth it if S3 #1 made less power than S3 #2 with a factory exhaust :smiley: And our resident Mr Shoduchi has 340hp from the factory airbox :smiley: And let's not forget, the difference between S3 #1 and S3 #2 is only about 5%. There would be no difference on the road between the 2 cars, but some people do rather get hung up on the peak hp numbers :smiley:
Did the Stage 2 car have a Loba pump and what boost pressure is R-Tech Stage 2? Is the S3 airbox the same as the Golf one? I can't see it holding back the power that much. Something else is required on that car I'd say, but interesting info all the same!
I'd love put Racingline's intake claim of +25hp to the test on my car, but it's a £450 experiment I can't afford at the moment!
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