Modding has began

[gogsie]

Had car to Japerformance in Ellon yesterday for rolling road, service, Goodridge braided hoses, new ITG panel filter and to fit H&S full exhaust with sports cat - then back on rolling road again.

Pre mod run was 289bhp at the fly wheel. Happy with that although was expecting closer to 300bhp from a JDM. [] 

Got car serviced and ITG filter fitted, Simon attempted to fit Exhaust but wrong flange on DP. UK flange instead of JDM for twin scroll turbo. Re-installed OE exhaust and tried it on rolling road just to see if ITG panel filter improved things. Gutted - no difference. [] Slightly better torque curve but very slight and no differance to bhp. Cars overfuelling alot so need a remap but need to wait until get exhaust back and fitted.

Nice 4 wheel drive rolling road Simon has - 90k worth. He does open days at £40 per car and before and after mods for £55 so it will take a fair while to get his money back.

Got to commend Ian at Hayward and Scott for good customer service. Called him to let him know that there had been a mix up and that I had ended up with a UK flanged DP and not JDM as ordered. He was real good about it and arranged for exhaust to be picked up today and getting it back Tuesday and he is re-embursing me for Simons Labour. Now if only all suppliers would respond so quiclky and without hassle.

Away on Monday so have to wait now for a whole month before getting exhaust on. Then it's new boost solenoid, walbro fuel pump and uprated waist gate (If required) then a remap. Still waitng for my Advans to arrive. 2 weeks overdue and now getting impatient. Guess I won't get near them for 4 weeks either - bummer!!

[fai17]

Your bhp will jump big times when you get the dp and remap.......i quess 340/330

[dipsy]

Must be the overfueling with getting that figure i wonder why its overfueling that much .Are you using ob in the tank aswell as optimax .I think power wise 360/350 after Andy f remap maybe more.I wold guess my 05 jdm sti is more like 305bhp or more the way it goes i use optimax and millers octane booster every tank.What did the standard down pipe look like of is a full open neck or is restricted like uk ones.You don't here litchfields cars getting uprated fuel pump for a full exhaust and remap and i thought the itg was a oily filter .I went for the green cotton filter .that my opinion

[gogsie]

Dipsy,

Subarus are over fuelled delibrately from the factory apparently as it is a safety thing. Much better/safer for the engine to be overfuelled than to risk running lean. Use Optimax but don't use OB unless on trackday. The other point is RR's vary greatly and maybe if I took it to a diiferent one I would get 305 but I'm not so bothered by that figure - more doing the RR for comparison to see what improvements I get.

The JDM down pipe has a more open neck and also the bolt hole arrangement is different, still 5 bolts but spaced differently to fit the twin scroll turbo.

The FP upgrade is not for the exhaust or remap specifically but spoke to a couple of Subaru guys and they reckoned if I was looking at going 360+ then was advised to upgrade fuel pump (OE good for upto 350bhp). Don't think I'm going to replace FP at the moment as I will be happy if I achieve the 340/350mark but more interested in the torque and how the car drives after mapping.

The ITG might have been a mistake as it made no difference and since fitting it and posting a thread on SN - heard a few things about itg filters giving problems although these seem to be all on classic mafs. Think I might go for green panel filter for remap then try ITG back in afteward to see if there is any difference but I need to do a deal with Simon at Japerfomance or all this rolling road costs will mount up. 

Gogs

[dipsy]

I  know they overfuel but the way you said it in your first post it was overfueling more than it should do.Thats why i said must be down to your low bhp reading .I use ob all the time to be on the safe side .Any body won't to give there opinion on this subject