hawkeye74 New Member 11 Member For: 10y 4m 3d Posted 10/05/25 02:29 AM Share Posted 10/05/25 02:29 AM Hey folks, I have a BA with built bottom end, trutrak, flex fuel with twin Pierburg pumps , Pulsar 3584, 4” intake and dump, 6 speed manual and quite a lot more. It has plazzy 800 hp intercooler and X Force twin 2&1/2” exhaust. Would it be the intercooler and or exhaust holding it back? It’s got 2000cc injectors and my tuner said he won’t tune it with them. I have XS1500 injectors to put in. Currently makes 442 kw on E85 and I am not happy with the tune. It has detonation on pump 98 on boost. What’s the opinion on why it’s not making 600hp on pump 98. thanks Tim Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/ Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,493 Member For: 17y 1m 3d Gender: Male Location: Melbourne Posted 10/05/25 08:00 AM Share Posted 10/05/25 08:00 AM your tuner won't tune with 2000cc... ok. get a new tuner, it sounds like... the new tuner should be able to tell you what they think is holding it back, but I'd take a guess that your fuel pressure regular or rail or injectors are the problem, maybe if you've got a restrictive cat? could realistically be anything... Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726267 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 24d Posted 11/05/25 02:54 AM Share Posted 11/05/25 02:54 AM 2000cc is pretty big, not impossible to tune though if you can get them firing reliably at idle. 1500cc at 3 bar base pressure will do good. As for your power goal, what compression ratio? To high will be a dog on 98. Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726269 Share on other sites More sharing options...
hawkeye74 New Member 11 Member For: 10y 4m 3d Posted 11/05/25 05:36 AM Author Share Posted 11/05/25 05:36 AM Here’s a rundown on the BA and how it is now Built bottom end Manley Pistons Spool I Beam Conrods ACL Race Series Bearings Billet oil pump gears XSpurt 2000cc injectors Crow cams Heavy duty valve springs Pulsar 3584 turbo with ported exhaust housing and 4 inch intake Process West air box kit Process West battery relocation kit S/S braided turbo oil return line 4” dump heat wrapped Full X Force crossover dual 2.5 “ exhaust with high flow cats and twin tips Plazmaman 800 hp intercooler Plazmaman Surge Tank with Twin Pierburg 360 LPH Fuel Pumps Pirotta Performance Flex Fuel kit FPR 800 Fuel Reg Aeroflow Fuel Rail Walbro 460 In Tank Pump Custom built Mal Wood T56 6 speed manual Xtreme Twin Plate Clutch Hardy Spicer twin piece tailshaft Eaton TruTrack diff C.W.P 3.73 diff gears Upgraded centre bearing Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726270 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 24d Posted 11/05/25 07:39 AM Share Posted 11/05/25 07:39 AM (edited) 4 hours ago, hjtrbo said: ... what compression ratio? Edited 11/05/25 07:40 AM by hjtrbo Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726271 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 24d Posted 11/05/25 08:36 AM Share Posted 11/05/25 08:36 AM On 10/05/2025 at 12:29 PM, hawkeye74 said: It has detonation on pump 98 on boost. What’s the opinion on why it’s not making 600hp on pump 98. Compression ratio? Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726273 Share on other sites More sharing options...
hawkeye74 New Member 11 Member For: 10y 4m 3d Posted 11/05/25 08:56 AM Author Share Posted 11/05/25 08:56 AM Hey hjrtrbo, I don’t know the compression ratio. Only got a dyno printout. Not happy with the tune. It previously had a high flowed 3582 and stock intake and was tuned by another person. It was a lot better tune than now with the 3584 and 4” intake. Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726274 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 24d Posted 11/05/25 09:22 AM Share Posted 11/05/25 09:22 AM A datalog and tune file would be handy. Where are you based? Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726275 Share on other sites More sharing options...
hawkeye74 New Member 11 Member For: 10y 4m 3d Posted 11/05/25 09:24 AM Author Share Posted 11/05/25 09:24 AM About an hour north of Newcastle NSW Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726276 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 24d Posted 11/05/25 09:34 AM Share Posted 11/05/25 09:34 AM There's a guy north of Adelaide that will get you heading in the right direction if you're up for a holiday 😉 Link to comment https://www.fordxr6turbo.com/forum/topic/97410-something-holding-it-back/#findComment-1726277 Share on other sites More sharing options...
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