Two into one Cold Air Feed fitted

[probee]

Ok you may have seen the other thread on this earlier this week, if not its here...

http://www.seatcupra.net/forums/showthread.php?t=130547

it hasn't been an easy day but the feeds finally got shoe-horned in and from the logs there seems to be a decent improvement in airflow and actually a little more boost than i've seen before. i also had the the best MPG I have ever seen from my car on the way from MK to Bedford.... could it all be down to the new air feed, im not sure but im still really happy.

rather than run through the job, i'll just post a load of pics, they are fairly self explanatory...

if anyone wants to do the same job I will happily try to give them a point in the right direction

 

[The MoffMeister]

looks really neat mate nice one

 

[probee]

looks really neat mate nice one

thank you

 

[Fl@pper]

looks like a professional SPT job

Nice one that - wp

 

[UncleFester]

Looks almost factory that mate, very smart install!

 

[kez]

very nice.

with having the fmic installed, and hence nothing behind the fog grilles, is there scope to fit a scoop which completely encompasses the fog light grille?

either way, i'm tempted to try something similar (there's a lot of room once a fmic's been fitted)

 

[probee]

thanks peeps....

Kez i dont think there is scope to do that... i had exactly the same thoughts when i fitted the FMIC but because you still have the silicon pipes going down the gap you havent actually gained much. you could always look for another route to take a larger feed up but i cant think where you would take it and it wouldn't be very direct.

 

[kez]

yeah, just thought with losing the plastic shield behind the grille, you could maybe fit a bigger scoop behind there.

your install looks great though. any chance of making more? or, doing a guide?

 

[probee]

i could do a guide for you mate but your biggest problem is making the scoops. i used 70mm stainless polished elbows and cut them up and got them welded at work... i mentioned to people on here before that the welder was willing to make some more but everyone sort of turned their nose up when they realised the elbows are £25 each and then they would have to pay the welder to cut and weld them... i say, you only get what you pay for, i was just fortunate in that i work where i can get the welding done for nothing.

the results have been really good and i would recommend it to everyone, even if you do it another way the results will be similar,it just might not look as good.

 

[DPJ]

Really neat piece of work.

 

[longman]

Very impressive mate.

Thanks for the pics!

 

[wild willy]

Any before and after logs.

 

[probee]

thanks longman.. and no problem

wild willy i'll see what i can sort out.

 

[UncleFester]

I just had a look at this tonight on mine, it looks like the air comes in from behind the bumper, up into the airbox, over the top of the engine and around and down the back, forwards just inside the drivers wheel arch ( inside some nasty cheap flimsly thin metal thing), through the intercooler and up the front of the engine into the engine..... that can't be the way they routed the OE pipe work surely?

 

[probee]

mine is slightly different to that mate but just as longwinded. it does seem stupid. i thought the idea was to keep things as short as possible.

 

[probee]

before

RPM Mass Flow Load Ign. Timing
TIME
STAMP /min g/s % °ATDC
0 720 2.69 1.6 7.5
1.21 2360 29.75 19.6 27
2.53 2120 37.81 28.2 21.8
3.73 3640 84.56 84.7 27
5.04 3760 40.08 27.5 33
6.33 4120 169.92 100 11.3
7.65 5520 190.61 100 9
8.86 6480 194.94 100 14.3


RPM Load Absolute Pres. Absolute Pres.
TIME
STAMP /min % mbar mbar
0.4 760 30.1 1250 990
1.6 2040 67.7 1020 1080
2.93 2560 86.5 1320 1280
4.13 4320 118.8 1710 1470
5.53 3320 121.1 1940 1440
6.75 4720 191.7 2380 2480
8.04 5880 176.7 2280 2160
9.37 6000 12 990 1500


after

RPM Mass FlowLoad Ign. Timing
TIME
677.21 4240 10.81 7.5 4.5
678.52 4360 171.86 99.6 14.3
679.83 4800 180 100 4.5
681.03 5200 187.72 100 6
682.24 5520 193.69 100 5.3
683.44 5800 196.83 100 8.3
684.85 6120 198.11 100 12
686.07 6360 202.33 100 10.5
687.27 6560 201.75 100 14.3


RPM Load Absolute Pres. Absolute Pres.
TIME
STAMP /min % mbar mbar
676.8 4240 12 990 1040
678.02 4200 84.2 1640 1130
679.43 4680 191.7 2360 2520
680.63 5040 191.7 2350 2420
681.83 5400 182.7 2330 2310
683.04 5720 180.5 2310 2230
684.36 6000 172.2 2290 2190
685.67 6280 169.9 2300 2150
686.87 6480 163.9 2290 2140



these two examples are maybe not the best but they do sort of prove the air feed has made a difference.

 

[UncleFester]

Ok so now you've got the air coming in nicely, what would happen if you ran a pipe off the back of the MAF curled it around the battery, ran it down through the front bumper area and along to the infeed of the FMIC. Or you could just run it along the top of the front slam panel - there's enough space to get an 80mm pipe along there and run it down to the FMIC.

This would stop air being heated in the pipe by the engine or the exhaust manifold and would mean it entered the FMIC already cool, surely this would maximise the effect of the cooling from the FMIC?

The only plus i can see of the OE pipework is that it would be nigh on impossible to get water from the bumper intake right around to the engine entry point as the route it takes is so up hill and down dale.

 

[Foxy]

I wouldnt worry about the air temperature too much, the air is heated up by the turbo and cooled in the intercooler before it reaches the engine anyway....

Thats a top job there, perhaps you should knock up a kit and flog them? I for one would think about buying one!

 

[UncleFester]

Right so where does the turbo sit in the grand scheme of things, does the air from the airbox lead to the turbo, gets thrown around that then forced into the FMIC then forced into the engine?

 

[probee]

yes mate that is where your plan is foiled... from the MAF it goes straight down the tip to turbo, then back up over the engine down through the space below the offside headlamp, through the FMIC and back up to the intake manifold.
when they were designing it they must have realised it wasn't a great place to put things. it does seem like everything you want cold is at the back of the engine.

Foxy what do you think people would pay for exactly the same pipework as mine? bearing in mind that the elbows are £25 each and i would have to get the welder at work to cut them about.