larger bore pipe will surely just introduce more lag and increase spool up

Absolutely, i fitted such a kit on my old 6 and the car took longer to spool, it lasted a couple of hours before it came back off

My current car has one, it came already fitted, i am running an Evo9 turbo but i'm still not convinced i need the kit, however its on and i dont have anything else to replace it with

 

Rich, i should have most (if not all) of the E6 standard pipework if you are serious about changing it back to std.

 

larger bore pipe will surely just introduce more lag and increase spool up

I think you are right up to a point, I suppose it depends on what levels of boost / power you are running? As you run more boost some of the pipes esp lower intercooler pipe becomes restrictive with airflow and so hampers cooling process and begins to restrict possible power?

At around 350bhp you prob don't need a hardpipe kit, but them I am sure others who know more than me would be able to give a better answer...

 

Yes thats a good point i was thinking about just fitting the pipe on the left that connects the j pipe to intercooler since this is flattened on the 6 and no doubt a little restrictive , but looking at the internal bore of the j pipe i wonder if even thats worthwhile

 

not need to change hard pipes with std oem turbos, you will lose spool and torque.


M.

 

Is the HKS kit much bigger in diameter than the standard rubber piping then?

My hoses are perished and as new ones cost a fair bit from :mitsi: I was thinking of just replacing them withthe HKS hard pipe kit

 

Mitsi /stock J pipe is 43 mm iirc
HKS J pipe is 60 mm iirc with no kinks...quite a big difference,this coupled with a lower intercooler hard pipe are the most restrictive parts IMO.

A.

 

Still umming then Straightliner

 

Hardpipe kit is at the powdercoaters so will make a decision after a trial fit when they come back

 

Does the extra 17mm or so of internal diameter really make that much difference to turbo response then?
I like the way the car currently spools pretty quickly with the smaller E4 turbo, but perished rubber hoses are no good:lol:

 

I might be interested in a deal with some hardpipes for my Samco pipes if anyone's interested... Pics in the link below.

 

the thing i knowtised when i fitted mine was how much more boost the car made, the car was setup at 1.1bar on the boost controller and when the hardpipes were fitted it went to 1.4 bar so i had to turn down the boost controller.

 

Perhaps you had a split in the rubber ones

 

Hard pipe

I took my air con comp off last night
So had to take the bottom pipe off that joins the j pipe,,
The metal piece is terrible and flat in areas
I remember to this on my old 8 and it defo increased the boost and never felt no more laggy to me
Will get 1 ordered

Wonder if these are any good
http://cgi.ebay.co.uk/MITSUBISHI-EV...403725827?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item563dc85203

 

I took my air con comp off last night
So had to take the bottom pipe off that joins the j pipe,,
The metal piece is terrible and flat in areas
I remember to this on my old 8 and it defo increased the boost and never felt no more laggy to me
Will get 1 ordered

Wonder if these are any good
http://cgi.ebay.co.uk/MITSUBISHI-EV...403725827?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item563dc85203

Paul, 99.9% of the time fit like a bag of knackers mate, better getting them done on the car when you get chance, always better when made to suit the car. JMO.

 

If fitting larger ID hard pipe kits increase lag, then surely fitting a smaller ID kit will reduce lag (up to a certain point)?

Has anyone looked into this?

I suspect that there's no doubt that, given the same ID, a hard pipe kit is better than a rubber hose kit, simply because less of the turbo's boost is used to expand the rubber pipes?

 

If fitting larger ID hard pipe kits increase lag, then surely fitting a smaller ID kit will reduce lag (up to a certain point)?

Has anyone looked into this?

I think you are right but there is the concern/argument that the turbo essentially runs out of puff and cant provide enough boost quickly enough , this could well be happening with mine perhaps due to the restriction of the flattened lower pipe , thats the main reason i started to think about a hard pipe conversion.

The stock system may well be best for stock boost but as desired boost pressure rises perhaps the requirement for large intercooler hoses becomes necessary, the trade off being longer spool up but ultimately more power and boost held better for longer.

Its possible if the boost comes in a little later then more timing could be added earlier, i dunno but it will be interesting to find out