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Re-Tune Required GTSS to 2530 Okay I am having a hard time trying to track down information for the particular circumstance I am in. I purchased a GTR several months ago that had the following applicable aftermarket parts: 1992 R32 GTR HKS Intake Pipes HKS Cat Back Exhaust HKS GT-SS Turbos HKS FCON V Pro 3.1 HKS EVC Boost Controller My turbos went out about a week ago and I have them currently being replaced right now at a shop that specializes in GTR maintenance and modification. I ended up not realizing what turbo's were on the car when I purchased it but I assumed they were either GTSS's or 2530s based on the response time and amount of boost they were able to handle. I ended up ordering a pair of 2530's for replacement. Now that I know the car had GTSS's in it before and I am switching to 2530's, do I need to get the ECU re-tuned? If so, what specific metric of the new turbo's would drive the need for a re-tune? My understanding is that these turbo's are very similar in response and power output and due to the limited availability of 4-wheel dynos and tuners who can work with HKS FCON products it is going to be close to another 2-3k to get the thing re-tuned and I am just looking to make sure it is necessary.

Hi Guys, Up for sale is an F-con V Pro Gold with patch loom for BNR34. This came with my car when I bought it but I since had it tuned locally to suit my EFR 8374, 1000cc injectors and E85. As you can see in the photos it comes with everything needed to plug it directly into a R34 GTR whilst still retaining the stock ecu for basic stuff. It also comes with the map sensor to suit and the loom to connect that map sensor to the ECU. Was working fine when pulled and was only pulled out as I upgraded to an Elite 2500. These are a great ECU for relatively little money and being one of the earlier ones there are tuners all over Australia who can tune them. Price is $800 ONO. Pickup preferred over post but will post at buyers expense. Items are located in Rouse Hill, NSW, 2155 and my number is 0403858714. Thanks, Brett