jabbasport induction kit

[plums]

I'm looking at getting an induction kit and was thinking about the jabba one. does it fit the cupra or the cupra r? mainly want a better sound from it, currently have smoothed and drilled air box with green panel filter so what it louder than that or is the ramair maxflow or green dynatwist a better option? been seaching info but cant make up my mind. also been reading on here that a Carbonio sounds good but were do they sell theses online for a cupra?

 

[Robertjwebb]

I have a Jabbasport induction kit fitted to my Cupra R. I think Jabbasport do the parts to make it fit both the Cupra and Cupra R. Before I had a standard air box with a green filter and the sound from the turbo and dump valve is much louder than before. I've also removed the soundproofing from under the bonnet which also made a big difference. I think the only downside of it is that even with the heat shield it's going to be sucking in some of the hot air in the engine bay, but I haven't noticed any difference in performance.

 

[GREY 225]

You will notice alot more noise with jabba induction kit,even more so if remapped.Good induction roar at low revs and then turbo whistle as turbo wakes up and a good dump valve sound to finish it off.
Really good bit of kit,had mine 2 years now and no problems at all,still using original cone filter which is J&R and get jabba to clean it when its in for a service,think they are now using k&n filters now.
I removed under bonnet sound proofing too but left a small square that sits over the heat shield as when bonnet is closed it seals against it tight.
I checked to see if filter was sucking in hot air and after getting engine bay really hot the heat shield was warm but filter was stone cold,even turbo inlet pipe was cool which must mean cool air is being drawn in through it.
Ive removed my front fogs and so could run cold air feed up to air filter using drain pipe,and that helps to supply air filter with a good supply of air,miles better than the standard factory ducting.

 

[traumapat]

the jabba heat shield almost acts as a seal. excellent bit of kit.

 

[RobDon]

No doubt the Jabba kit is decent, but very expensive for what it is. Heat at the air filter is irrelevant on a turbo car, once the air is compressed by the turbo it exits at 120+ degrees C, it's the intercoolers job to cool the air before it enters the engine, not the air filter. Doesn't matter if the air entering the filter is 5 degrees or 20+ degrees, it still comes out the turbo at 120+ degrees.

 

[Nev_LCR]

i know jabba use a K+N now but, the jetex filter they use to use, i run the same size, cost me total of £65, you can buy the heat shield for £65 and still works out cheeper.

 

[everitt1980]

No doubt the Jabba kit is decent, but very expensive for what it is. Heat at the air filter is irrelevant on a turbo car, once the air is compressed by the turbo it exits at 120+ degrees C, it's the intercoolers job to cool the air before it enters the engine, not the air filter. Doesn't matter if the air entering the filter is 5 degrees or 20+ degrees, it still comes out the turbo at 120+ degrees.

I always thought this when looking at induction kits for my cupra but thought i must be wrong with so many of the guy's on here using them so never asked the question. Think i'm just gonna smooth the air box and get some better air duct for the green panel filter i have already.

 

[GREY 225]

No doubt the Jabba kit is decent, but very expensive for what it is. Heat at the air filter is irrelevant on a turbo car, once the air is compressed by the turbo it exits at 120+ degrees C, it's the intercoolers job to cool the air before it enters the engine, not the air filter. Doesn't matter if the air entering the filter is 5 degrees or 20+ degrees, it still comes out the turbo at 120+ degrees.

Isnt hot/warm air,as in around the engine bay less dense/thinner though,and cooler air being drawn from the outside denser.I thought a turbo works better with dense air.

 

[RobDon]

What difference does the density make when the turbo compressor chops the air up, compresses it then fires it out at 120+ degrees?

 

[robepton]

Not an expert but I thought the temperature would of been dependent on ya level of boost and surely colder air going into turbo means colder air coming out.

Gas turbines run on the same theory as piston engines with turbos and there power output is massively effected by temperature and air density.

At least if nought else if ya sucking in cold air it's gonna help ya turbo stay cooler and last longer.

 

[GREY 225]

But if the filter is sucking in warm air will that not affect the reading taken by the maf sensor which is reading the volume/density of the inlet air.Warm air=less dense,and the ecu takes this into account.The under bonnet temps are very hot too on a charged engine.

 

[RobDon]

MAF doesn't read temperatures. You do realise that the hotside of a turbo is driven by 800 degree exhaust gasses!

 

[robepton]

MAF doesn't read temperatures. You do realise that the hotside of a turbo is driven by 800 degree exhaust gasses!

But the density is proportional temperature. If the density of the airflow is not important before the turbo why have an MAF just after the air filter and why would manufacturers go to the expense of ducting the air from the front of the car?

 

[RobDon]

MAF measures airflow to deliver the correct amount of fuel - nothing to do with temps or density.

 

[robepton]

MAF measures the MASS of the air flowing into the intake.

 

[RobDon]

The bottom line is that it makes no difference having shielding and air ducts to an air filter, after the intercooler the temps are the same because the intercooler does the job of cooling the charge air. I did a test myself between an open cone and an enclosed filter with a direct cold air feed, using Scangauge to monitor the intake temps ..... intake temps were exactly the same, no difference at all.

 

[GREY 225]

MAF doesn't read temperatures. You do realise that the hotside of a turbo is driven by 800 degree exhaust gasses!

Yes i know the maf doesnt read temperatures,thats the job of the inlet temp sensor in the manifold.

The Mass Air Flow Sensor is probably the best way to measure
the amount of air an engine takes in (engine load). This sensor
not only measures the volume of air but also compensates for its
density as well. Ford, GM, and many imports are using engine
control systems based around this sensor.

Note the bit about compensates for density.

 

[robepton]

Yes i know the maf doesnt read temperatures,thats the job of the inlet temp sensor in the manifold.

The Mass Air Flow Sensor is probably the best way to measure
the amount of air an engine takes in (engine load). This sensor
not only measures the volume of air but also compensates for its
density as well. Ford, GM, and many imports are using engine
control systems based around this sensor.

Note the bit about compensates for density.

So your saying that the ECU adjusts the boost and the throttle opening to compensate for the air intake temperature so you always get the same temperature at the manifold and if this was true we could see the difference on a boost gauge.

Just been reading an article torque cars and they reckon that a 20 degrees centigrade difference in temperature works out at about 3% drop in power.

Also been reading up on hot wire MAF and they measure the mass flow of the air by the change in resistance of the wire as it changes temperature when the air flows over it. so the temperature obviously has some affect on the readings that it takes.

 

[robepton]

I wanna try and make me self a little wiser before i go and fork my money out for a BMC CDA rather buy it for performance than the sound effects.

 

[Mr Roboto]

Heat at the air filter is irrelevant on a turbo car, once the air is compressed by the turbo it exits at 120+ degrees C, it's the intercoolers job to cool the air before it enters the engine, not the air filter. Doesn't matter if the air entering the filter is 5 degrees or 20+ degrees, it still comes out the turbo at 120+ degrees.

That's what thought.