poll250

AFAIK you shouldn't need to cut a section out of the head for OBD2 cars, only OBD1. I had to cut a bit off mine when I trial fitted my old Rotrex kit.

Hi guys, Bit of a strange question I'll admint: I've been running my Stealth Racing VRT since April/May last year without any problems. It's got a 2.5" exhaust with 2 silencers and not cat, and a 4" intake with the original inlet manifold. The car is ballistic, but my problem is that really miss the VR induction roar. Is there any way to change or get some induction sound on a VRT? After 9 months of daily use, it just seems so bland in comparison! Any ideas would be great....

I'd stick some mesh on there if I were you. I think by reducing the turbulence in the MAF, the airflow reading that it takes is more representative of the amount actually going in. If that makes sense?

Nice one cheers mate! How long did it take to arrive?

how did you power these? They look great Have you got a link to the ebay kit you'd recomend?

I've got one going for £35 posted. It's advertised on the Corrado Forum currently.

Are there any non-airbag mk4 style wheels?

Are there any non-airbag mk4 style wheels?

So I just need a CP ecu, and 4 pin MAF? I don't need to change engine wiring harness, lambda plug or add an immobiliser ring or anything?

Has anyone changed from a 6 Pin to a 4 pin MAF on an OBD1 car? I think my car would run a lot better with a 4" housing (currently running 0.9 bar). From what I know, later VR Corrados got the 4 pin MAF with the CP ECU (as well as Immobiliser and different Lambda). Having searched around Vortex, I found some threads saying you could just swap the MAFs and wire up as follows: OBD1 6 Pin MAF 4 Pin MK3 Style MAF Pin 1 ------(Brown/Yellow) ----------------> Pin 1 (Ground) Pin 2 ------(Brown/Blue) ------------------> Pin 2 (Signal Ground) Pin 3 ------(Red)

To make it worthwhile opening up on a Sunday I'd imagine!

I think I'm going to have to pull out of running. I'm only going to be picking my car up on Thursday at the earliest from having the Turbo conversion, so seems a bit silly to run again a few days later on the same rollers! Will hopefully drive over and say hello though!

I've been running 8.5:1 compression for the last year and its been fine, so no wirries there. I think ARP head bolts are about the same cost as new VW ones, so makes sense to use them in the first place IMO. Good luck!

Great work as usual Kev! Would love to get rid of all that ISV pipework one day. I take it you need a standalone like DTA to get this running on a 12V though.

I dont think this problem has anything to do with converting to OBD2..