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(Post Link) post #1 of 40 Old 16-10-08 Thread Starter
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GTA Air intake pipe on 156 2.0 JTS

Hello, I apologise if this has already been discussed but is it possible to fit a GTA Air intake pipe onto a 156 2.0 JTS? If it is possible are there any benefits? Thanks in advance for any replies
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Re: GTA Air intake pipe on 156 2.0 JTS

Not possible
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(Post Link) post #3 of 40 Old 16-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

Bad times thanks anyway
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Re: GTA Air intake pipe on 156 2.0 JTS

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Hello, I apologise if this has already been discussed but is it possible to fit a GTA Air intake pipe onto a 156 2.0 JTS? If it is possible are there any benefits?
Depends what pipe you are talking about.
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Re: GTA Air intake pipe on 156 2.0 JTS

I assume he is on about the ppe from MAF to engine, tis a bit cheap and crappy I always reckoned, not exactly the same as the AD version that you can get on the V6. Could always get some silicon hosing and make my own.
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Re: GTA Air intake pipe on 156 2.0 JTS

Do you mean the 'GTA mod' which replaces the resonators before the filter or the 'AD intake' for the V6's??

You can do the first, theres no point in the second on the JTS.
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(Post Link) post #7 of 40 Old 18-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

I was talking about the AD intake and was wandering is there a similar one for the jts as a colleague from work suggested it but wasn't sure if it could be done. I've been looking to gain a better exhaust note, but after looking around on the forums, I noticed many people feel that the induction doesn't need upgrading and that an induction kits isn't needed. Can any of you guys recommend a back box which ain't going to sound over the top instead? thanks
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Re: GTA Air intake pipe on 156 2.0 JTS

The AD intake is pointless on a JTS, that pipe removes resonators the V6 has in that section, the JTS has none in that part.

What you want to do is the GTA mod, that removes resonators that the JTS has before the filter.

Not sure about exhausts.
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(Post Link) post #9 of 40 Old 24-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

I ll give it a go cheers
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Re: GTA Air intake pipe on 156 2.0 JTS

Migt do this myself too, to at least improve throttle response.
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(Post Link) post #11 of 40 Old 25-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

Just to check, can this mod be done to the jts engine?
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Re: GTA Air intake pipe on 156 2.0 JTS

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Just to check, can this mod be done to the jts engine?
i don't think it can be done
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Re: GTA Air intake pipe on 156 2.0 JTS

Yes it can, I did it to my 156.
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Re: GTA Air intake pipe on 156 2.0 JTS

G5een has this done so it is possible. I have the parts ordered, they will take a week to come in, i'll post here any changes it makes to response or sound.
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Re: GTA Air intake pipe on 156 2.0 JTS

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Yes it can, I did it to my 156.
Cant believe he beat me to it..
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Re: GTA Air intake pipe on 156 2.0 JTS



I combined the GTA pipe with a K&N filter. Couldn't notice a massive difference in the car, but outside sounded much better.
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Re: GTA Air intake pipe on 156 2.0 JTS

Ive got a BMC sports filter instead of the K&N. Pretty similiar effects I would imagine.
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(Post Link) post #18 of 40 Old 27-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

did you both fit air box filters or totally replace the air box?
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Re: GTA Air intake pipe on 156 2.0 JTS

Kept the original airbox and changed the filter. The 'GTA mod' replaces the resonators in front of the filter.
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Re: GTA Air intake pipe on 156 2.0 JTS

Same, original airbox and just changed the filter.
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Re: GTA Air intake pipe on 156 2.0 JTS

Just picked up the parts, €39.78 the 5 parts cost in total. It's a good sturdy big vore piece alright, should definately increase flow I reckon.
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(Post Link) post #22 of 40 Old 29-10-08 Thread Starter
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Re: GTA Air intake pipe on 156 2.0 JTS

Awesome let us know the results, do you have the part numbers? Cheers
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Re: GTA Air intake pipe on 156 2.0 JTS

Thanks to Roswell for initially posting these..

GTA Intake Modification - Parts Required

60677409 - Air Intake

7663916 - Retaining Block

60630491 - Spacer

12624101 - Flat Washer

15697604 - Screw

Seeing as it's pretty dark early in the evenings (and cold) along with Arsenal v Spurs tonight and going karting, it could be saturday by the time I get round to fitting it.
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Re: GTA Air intake pipe on 156 2.0 JTS

A year ago I have measured the difference between the stock airbox and the GTA intake.
I have measured the stock setting on my 2.0 JTS and I have swapped the resonator box for the GTA intake and measured the difference in airflow.

See also some diagrams I have made after the first 6 runs with the stock airbox.

The second diagram is all the data of 6 runs plotted in 1 diagram (STOCK), it can be seen it lacks airflow at high RPM (from 5000+)Volumetric efficientie drops from 95% to 85% [:^(]

The diagram below represents the data measured from the first run only (of in total 6).


OKAY THE VERDICT:
I doubt if it if any power is gained, it could be that it had become worse especially in the mid range @3750 en @4500.
See the links of the diagrams.

STANDARD SETUP



GTA INLET



COMBINATION OF BOTH PLOTS



The influence of the outside temperature can be neglected, it was even cooler by a few degrees during the GTA intage runs.
The outside temperature was approx. 27-30 graden on both runs.

NOTE that I do not know where the outside temperature is measured. All I know is that it is refered to as the inlet temperature by the EOBD.

I guess that it is measured in the MAF. This does not mean that the air which flows through the inlet has this temperature.
The outside temperature was lower than the measured inlet temperature.
As the inlet is heated by the engine, it is cooled by the incoming airflow. An equilibrium wil form, but I consider it unlikely that the incoming air will be equal to the measured temperature.

Anyway the shorter the inlet duct the less the entering air wil heat up as it doen not need to cool down the coplete inlet duct. Therefore in theory the much shorter GTA inlet has the best opportunity to keep the air cool.

My verdict: a nice placebo part wich does not give any power increase but gives you a better sound from your engine which gives you the impression you did gain some power...


Regards F156
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Re: GTA Air intake pipe on 156 2.0 JTS

Thats some indepth research

It does sound pretty nice with the GTA pipe and new filter.
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