I have a TFI on an 04 XB12, it is certainly not plug 'N' play because it is manually adjustable.
Having said that it may be different to the 08 version, but if it is the same then you can set it up as the instructions say but then it should be set up on the dyno to get the best out of it.

Can you adjust F+R independently?

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08 Specialized Langster

I have just checked the free spirits version, it is different to mine, on mine you can't adjust F&R seperatley and it looks like the new 08 version is the same.

Mat at Trojen told me I could buy either the Remus Powerizer or the Free Spirits TFi unit. Powerizer is plug n play whereas the FS one has a few maps to get you going but can be adjusted on a dyno. why is it important Pash to adjust the F + R separately? Surely they will need equal fueling?

Incidently, I had an offer of a powerizer the other day to try out! Said no becausae he said it takes about an hour to fit. Thats 3hrs then! Take his off, fit on mine, take off mine! Didn't see the point for a few days trial BUT I fear I've missed an oportunity! Blackbird who offered it said it does make a difference but couldn't be more specific? I guess it makes the throttle alittle more lively! When he's back I ask him if he will swap bikes, he has same bike as me with stock headers and remus can.

I don't want to depress you ph, but Paul1433's bike (an '08 or '09, can't remember!) seemed to go just fine on the way to Belgium, and that's on stock headers with a Stealth can. Sounded fit too!

Mind you, he's apparently broken several Remus cans and 1 Stealth

Repeat after me, Trojan... Trojan... Trojan... Trojan... Trojan... Trojan... Trojan...

Important for front and rear cos the header lengths are now different to stock which means the front to rear fuelling ratio has changed. Unless you can address them seperately, I dont think you will get what you want.

If you buy one off Trojan, and it doesn't do what you want, will he take it back?

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08 Specialized Langster

Trojan... Trojan... Trojan... Trojan... Trojan... Trojan...

Yeah I hear what you're saying Pash but I'm not the first to buy this exhaust system and no one seems to have mentioned a flat spot before. Could it be that no ones noticed it? It's not hugely noticeable but it lacks the tear your arms off after 4000rpm. Between 3-4000rpm it's great! Or is trojans advertising about more speed etc aloud of bull - which would be false advertisement. I've been told also that most Harley Owners and similar bikes when changing the exhausts will have to mod their jetting and air filter as part of doing the whole job properly.

I don't think there's anything wrong with my bike, it's just detuned! I'm convinced now that bigger headers on 09 Buells need to upgrade their fuell and air via remapping and air filter which I have not yet done.

Never ride in the wet, worry about insignificant blemishes, persecution complex and now aligning yourself with Harley owners... maybe you should have turned left rather than right when you walked into the showroom.


Do you think that you are the only one who is sensitive enough to notice that the bike doesn't tear your arms off after 4k rpm. I suppose you are the one who thinks there's nothing wrong with their bike, even though you think it's been detuned.

Really, what do you want? You say yourself that no-one else has reported the flat spot that you are beating yourself up about. You are now looking for feedback on an FS TFI unit which, again, you say yourself that no-one else has needed.

I do wish I was a fly on the wall listening to your call to Matt, though.

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Good in straight lines
2001 X1 "The Tart's Handbag"
2001 FZS1000 "The Fridge"

ph4824, I don't know you, but you do seem to make quite a stir with your posts and I think that's good in many respects.

Forgive me for saying this though, and I really don't mean to be nasty. But I get a feeling from reading between the lines that you might just have actually bought the wrong bike. Good luck.

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Try doing this to yer fueller...........

I think this is good as well. It will be particularly good for futures buyers to know what works and what doesn't and potentially what you need to do to make it work. It strikes me that the problem ph seems to be having is not completely dissimilar to other peoples experiences with 08 bikes. I thought initially the solution was somewhere between the headers and throttle bodies? As Trojan is a forum member I think it would do his reputation good to come forward at this stage and offer assistance and advice to rectify ph problems.

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In a purple fug

wise words

Wise words indeed, and kinda what I was suggesting / coming to.

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Good in straight lines
2001 X1 "The Tart's Handbag"
2001 FZS1000 "The Fridge"

I don't mean to be disrespectful of the poster, he/she has invested a fair amount of cash in this experience so deserves better than that. But, it won't be the first time somebody bought the wrong bike. And it won't be the last.

I bitterly regretted buying a Jeep 60th Anniversary edition once for a lot more than the cost of an XB only to find out it was a complete, utter POS and the (second) worst purchase of my life.

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Try doing this to yer fueller...........

Not necessarily bought the wrong bike, but maybe had false expectations of the effects of improvements...

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08 Specialized Langster