afpr
21 March 2010, 11:04 PM
#1
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afpr
hi,look like to gather some info on wht power figure can be achieved with leaving the oe fpr on,i have the oe fpr and run 298/303,if i was to up the power/boost to say 325/325 ish,would it be necesary to use an afpr or would standard fpr still be ok? i have a uk my99 turbo. what car/power/fpr are YOU running?obviously i will be using a 3 port boost solinoid,ill also be using the oe 440 inj. thanks.
22 March 2010, 12:03 AM
#3
440s should do around 320 on their own, but will not leave much headroom, I think.
If I were you... then I'd add an adj FPR (Fuelab) for sure. Mapper will be able to control them better plus add a bit of extra ign adv and/or boost as he'll be able to up the pressure (thus the fuelling) from the stock 3 to 3.5+ bar, too...
Check your plugs' conditon while you're at it.
If I were you... then I'd add an adj FPR (Fuelab) for sure. Mapper will be able to control them better plus add a bit of extra ign adv and/or boost as he'll be able to up the pressure (thus the fuelling) from the stock 3 to 3.5+ bar, too...
Check your plugs' conditon while you're at it.
22 March 2010, 12:09 AM
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so will the gains be worthy of spending £££ on the fpr? what power gains will it give me?eg. if i get it mapped to 320/320 on oe fpr,would i for example only gain another say 5bhp or so from the fuelab? if thats the case then surely to spend £££ and fitting wouldnt be worthwhile? or have i got this all wrong?
22 March 2010, 12:17 AM
#7
It's more about safety really - you wouldn't want a melted piston for the sake of running the 440s near max IDC when on WOT/load, etc.!
I don't know what, say, 440s running at 3.5bar would add, bhp wise. It'll be a combo of the extra fuelling, ign. adv and boost that the mapper is able to dial in, that will determine it. How long's a bit of string?
I don't know what, say, 440s running at 3.5bar would add, bhp wise. It'll be a combo of the extra fuelling, ign. adv and boost that the mapper is able to dial in, that will determine it. How long's a bit of string?
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22 March 2010, 12:20 AM
#8
That said, I expect it'll be around an extra 10+bhp. So no, the cost per bhp isn't worth it - esp. when you'd be 'starting' off from c.300bhp anyway.
Thats why, personally, I'd swap the 440s for 550s... then that way you'd DEFO realise the VF35's full potential for making its max bhp, for sure. Plus you won't have to worry about marginal fuelling when 'on it' (unaided 550s can flow enough for 400-420bhp).
Thats why, personally, I'd swap the 440s for 550s... then that way you'd DEFO realise the VF35's full potential for making its max bhp, for sure. Plus you won't have to worry about marginal fuelling when 'on it' (unaided 550s can flow enough for 400-420bhp).
Last edited by joz8968; 22 March 2010 at 12:26 AM.
22 March 2010, 12:26 AM
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That said, I expect it'll be around an extra 10+bhp. So no, the cost per bhp isn't worth it - esp. when you'd be 'starting' off from c.300bhp anyway.
Thats why, personally, I'd swap the 440s for 550s... then that way you'd DEFO realise the VF35's full potential for making its max bhp for sure.
Thats why, personally, I'd swap the 440s for 550s... then that way you'd DEFO realise the VF35's full potential for making its max bhp for sure.
,so i dont mind if i have to get the afpr,but only if nescesary,im defo sticking with the 440s mate,certainly dont want a melted piston either,but it does seem alot of money for eg 10 bhp?? dont know what to do,the fpr money will pay for map tweek if u get me?
22 March 2010, 12:41 AM
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Doing the FPR will give a margin of safety with the 440's and will be ready for further mods. Unfortunatly the same can be said for going upto 550's. Speak to who ever you are going to get to do the mapping for advise. Personally I would go for the injectors as there is more play for the mapper to get things set right.
22 March 2010, 12:43 AM
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Doing the FPR will give a margin of safety with the 440's and will be ready for further mods. Unfortunatly the same can be said for going upto 550's. Speak to who ever you are going to get to do the mapping for advise. Personally I would go for the injectors as there is more play for the mapper to get things set right.
22 March 2010, 12:46 AM
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thats what shes already got,she wont be happy 2nd time round,just want the car finished now so i can put money in the fuel tank rather than not driving it much cause im always saving for something,time to enjoy the motor now. just this bloody fpr milarkee!
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