fuel costing me £1 for every mile!!!!!

[rmagictastic]

something tells me you werent aware off this!!

i can catagorically tell you with a big bridge, you will spend alot of time in petrol stations...

rmaj

[ttpower]

lol! yeah its shocking me, and i though lambo\'s were bad on fuel lol! im ok with around 15mpg, but £1 a mile is bit ridiculous, it must be pips base map.
But can standard injectors through out that much fuel???

[sadgoth]

My small 1/2 bridge with stock ancillaries was getting me 7-10mpg in town and maybe 15mpg on the open road and that was running stock fuel pump, stock turbo, stock ecu and injectors in the FC. The stock ecu over fuels slightly in the FC, I would suspect the basemap on the PFC will do the same.

[antnicuk]

what injector duty are you reaching at 3k rpm,   should only be about 26 - 30.  Bridges of any kind use loads of fuel.

I think a lot of your problem is the twin turbo pack, you will have huge back pressure which will make fuel economy worse, also, you say you disconnected the oil supply to one of the turbos,  that cant be good cos the impeller will still be forced to turn, you will have no oil cooling, the bearing has probably seized solid.  You are better off pulling the turbos, ripping all the gubbins out and putting the housings back and running N/A while you run it in.  That way your down pipe still fits,  Or IIRC, you can just blank of the turbos and remove them, but still attach your down pipe to the centre section.

[ttpower]

hmm, so seems then that its not leaking any petrol then lol! but those figures are still better then mine, its about 7mpg. must be pips base map, gonna give him a call.

[antnicuk]

its not just base map! see my post above!   you will probably find that with one turbo you are creating boost at idle

[ttpower]

thanks antnic, i\'ll have a look and let you know what the inj duty is. I\'ll take the pack off the weekend and block the turbos off, should i just put a filter on the end of the elbow pipe? didnt know that it would create alot back pressure on standard twin turbos, i\'ll have to invest in a singe now(excuse lol). So if i block off both turbos, would that reduce back pressure and increase fuel consuption?

[ttpower]

it\'ll be my 3rd changing this turbo pack, prob the worse job on a rex, last time my gaskets failed and my neighbours werent to happy with that extra noise lol!

[BlitzBoy]

yeah Im with Tony on this one, didnt realise u were running stock twins on a Half bridge!! probably seized that turbo right up.

Stock twins on a hlf bridge is a no no you ar choking it right up, what single turbo u going for?

FYI on my half bridge I get 12-14mpg around town, at 60mph I get 22mpg, 90mph about 18mpg, on blat mode 9-10mpg

[ttpower]

not too bothered about the turbo pack as im planning on gettin a single once its run in anyways. Im cool with them fuel figures, pretty much what i was hoping for lol!

Would this turbo pack then be a reason why its a dog to start?

[m4drx]

i get 15mpg with no porting!

[ttpower]

lol!, thats good, better then 3mpg! Could be an excuse to bridgeport!

[m4drx]

with my heavy food i\'d need my own tanker mate.

i like the smoothness of sequental twins and the drivability of a close to stock car so not for me.

everybody has thier wants but i could only see myself doing that if i wanted to drag the car purely.

glad to see all the different breeds though.

[ttpower]

lol yeah, think mines only goin to be a track/weekend car.

[antnicuk]

no, but cold plugs and lots of fuel would be,  get a set of 7 and 9 plugs in there if you havent already and it should be ok.  Are the plugs in it the ones that you put in it after it was first started when rebuilt?, if so bin em,  you should always use old plugs on a new engine until its been warmed up for the 1st time then throw them and put new ones, all the gunk in the engine after rebuild clogs the plugs.    if its rich, low numbered (hotter) plugs will help it start easier.