sweeper240
04-06-2012, 06:11 PM
I am getting an HKS tuned sr20det notchtop (s14) swapped into my car soon, it comes with an HKS GTRS Turbo, an HKS BOV, an FCON HKS ECU, front mount inter-cooler, Turbo timer, possibly another piece of electronics but I can't remember, and an upgraded HKS fuel pump.
The person doing the swap has advised that I keep my existing mechanical fan rather than using the electric fan because the mechanical fan pushes more air. Is this true?
I've read a little about turbo setups and wanted to know what everyone's opinion was about BOVs exhausting to the atmosphere vs recirculating. In the case of recirculation where should the BOV recirculate to and how much piping is recommended I've heard 8" of pipe before and after the MAF (for the ideal setup). Would it be possible to just recirculate the existing HKS BOV or would I have to get a different valve for this?
The engine/car has been setup to run without an MAF, the ECU apparently is tuned for this and the BOV is setup to exhaust to the atmosphere. Understand that the engine is coming from an HKS USA built s14 (white) that was purchased when they left the USA, so I suppose its been properly tuned for this mode of operation, however I am interested to know what is the most efficient and engine optimum setup. Recirc seems like it is better but harder to accomplish physically, while using FCON ecu with the right programing cures issues that might arise with not recirculating (and eliminates the need for MAF).
Please let me know your thoughts on this. The engine is pretty nice I drove the car the other night (supposed to have around 340hp), I don't really care for the BOV sound... I'd rather it not make that sound but its not going to stop me from putting the engine in my car (1993 s13 hatchback).
Just because recirc is harder to accomplish doesn't mean I wouldn't want to do it, if it was actually superior for the car longevity or some other engineering minded/efficiency factor. Yes I understand that if I have a MAF refitted and recirc the BOV I will have to re-program the FCON ECU (this has been estimated to cost $1000 by Excess).
The person doing the swap has advised that I keep my existing mechanical fan rather than using the electric fan because the mechanical fan pushes more air. Is this true?
I've read a little about turbo setups and wanted to know what everyone's opinion was about BOVs exhausting to the atmosphere vs recirculating. In the case of recirculation where should the BOV recirculate to and how much piping is recommended I've heard 8" of pipe before and after the MAF (for the ideal setup). Would it be possible to just recirculate the existing HKS BOV or would I have to get a different valve for this?
The engine/car has been setup to run without an MAF, the ECU apparently is tuned for this and the BOV is setup to exhaust to the atmosphere. Understand that the engine is coming from an HKS USA built s14 (white) that was purchased when they left the USA, so I suppose its been properly tuned for this mode of operation, however I am interested to know what is the most efficient and engine optimum setup. Recirc seems like it is better but harder to accomplish physically, while using FCON ecu with the right programing cures issues that might arise with not recirculating (and eliminates the need for MAF).
Please let me know your thoughts on this. The engine is pretty nice I drove the car the other night (supposed to have around 340hp), I don't really care for the BOV sound... I'd rather it not make that sound but its not going to stop me from putting the engine in my car (1993 s13 hatchback).
Just because recirc is harder to accomplish doesn't mean I wouldn't want to do it, if it was actually superior for the car longevity or some other engineering minded/efficiency factor. Yes I understand that if I have a MAF refitted and recirc the BOV I will have to re-program the FCON ECU (this has been estimated to cost $1000 by Excess).