yes the fuel pressure guage the one i bought the otherday doesnt work so im yet to return it but am going to borrow a mates so fix this prob
i my malpassi feul reg is all hooked up correctly but i think where i went wrong due to no preasure guage is that i adjusted the fuel reg to max so i would always have fuel due to no preasure guage

so i think that if i use my mates fuel press and adjust my fuel pressure down so at idle its about 7-8psi
then i should b laughing right??

That would be the first step.

sorry guys i still cant seem to stop this lean out i adjusted my fuel presure reg so thats all good now
and i tried to run a line out of the vent on top of my weber to my actuator and also tried conecting this to my manifold but neither of these worked

so i am just stuck on this vent wot do i do to it? i'v tried just blocking it off and this didnot fix the lean out


is there anyone one here with experience with blowthrough turbo that could come around and help me out??

The float bowls haven't crushed or something silly causing them them to bind in spots or something? would that block the fuel inlet off so there's too much pressure where it shouldn't be

uhm thats a negaive im running the plastic floats and it is all fine inside the carby

maybe if some one on here is exprienced in this setup maybe if they give me there no i could give em a call it might b easier than typing...?

Are you running the 1:1 blowthrough malpassi, there are 3 types just check its the correct one mate. Also it wont work if the fuel in/out are around the wrong way on the reg. Return line needs to be free from restrictions, i tend to use 10mm. With the carby malpassi reg you should be able to set base fuel pressure to around 5psi. Check with your gauge this rises to around 12psi (base5 + 7 boost) under full boost. Check the float level, try raising it alittle. Make sure the needle and seat are ok, not sticking. Most people drill them out to 2.5mm anyway to ensure better flow as the bowls arnt exactly huge. With the lid off carby and fuel line/pump on and working check needle and seat seals up. Also how lean was it getting what was the AFR? Hope that helps a little. Ill be going a holley 350 on my turbo a12 always another option. Cheers

ok man i'll check wot malpassi i have and also the afr
iv been debating going holly cause i just can figure this weber out and apparently they are easier to do a blow through setup and also the same flange as a weber?? well some are

i dont have the fuel the wrong way either the malpassi is clearly marked with arrows im running a base fuel psi of 8

What a dogs breakfast. Lets get one thing straight. Have you blocked the fuel bowl breather vent from inside the carby? If you have, that is a big mistake. The carby will rely on this to pressurise the fuel bowl under pressure. This is why you need the rising rate fuel pressure regulator. Bas setting should be around 5 psi. With the rising rate fuel regulator, you can test it with your low pressure fuel guage, as boost starts to increase the fuel pressure should increase also. For every 1 psi of turbo pressure the fuel pressure should rise 1psi. If this is not the case the regulator is either not hooked up correctly or not working(rare). The arrows should not be your instruction manual, use the actual instruction manual. There is no need to drill any extra holes in your carby.

Another important piece of the puzzle is the timing. The base timing should be set around 18 degrees with a total advance of 30 degrees. Or lock the dizzy and set the base timing at approx 20 degrees. Your first engine was not a dud before the turbo went on. It failed as a direct result of not setting up correctly. Your A14 has probably done it's breakfast already if you have run it leaning out like before.

the first engine used to breath heaps of smoke the whole time i had it even b4 the turbo

but the fuel reg came with no instructions but is hooked up correctly and i cant c the fuel pres guage wen i drive but if i rev it it does go up in psi and i do not have that vent blocked anymore
so thats why i cant figure out why it still leans out?


im runnin holy blue a r/r reg and primary jet a 120 and secondary a 140

I dont know if carb and efi works the same but have you hooked up your malpassi to your return line I now of guys with efi cars that have mixed that up and hooked it up to the supply. Then it doesnt work. But like I said dont know if a carb setup works the same