Jump to content
SAU Community

Recommended Posts

Been told and looking for information on the MALPASSI FUEL PRESSURE REGULATORS

basically is anyone using these on turbo cars and what are the results?

my engine builder and tuner have strayed me away and told me not to use it as it stuffs around with your A?F ratios too much (ie. 3 runs on dyno same tune and 3 diff A/F ratios?)

can anyone confirm this and give me info and results if you have used them

Thanks

Link to comment
https://www.sau.com.au/forums/topic/157901-malpassi-fuel-pressure-reg/
Share on other sites

Have useed them in the past to get more power out of standard injectors, the pressure has to be setupm as it isnt out of the box. There are three different models, 1:1, 1.7:1 and 2:1. no problems with varience on the dyno. i dont understand why do you need one?

i bought one cause i've just turboed my na and havent upgraded the injectors but a little extra pressure will make them flow a little better as i dont quite need to replace the injectors just yet, putting it on on friday when the car goes on the dyno. ill see how it goes.

i think he was refering the n/a injectors to my post earlier, and i didnt pick up stock injectors cause right now i dont need them for the car, im planning on upgrading the fuel rail 550ish injectors high flowed turbo cams bigger cooler and prob a head gasket in about 6 months and who knows what condish the second hand injectors are in at least i know mine are good and up to the task im asking of them right now

i bought one cause i've just turboed my na and havent upgraded the injectors but a little extra pressure will make them flow a little better as i dont quite need to replace the injectors just yet, putting it on on friday when the car goes on the dyno. ill see how it goes.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Yeah, it's getting like that, my daughter is coming over on Thursday to help me remove the bonnet so I can install the Carbuilders underbonnet stuff,  I might get her to give me a hand and remove the hardtop, maybe, because on really hot days the detachable hardtop helps the aircon keep the interior cool, the heat just punches straight through to rag top I also don't have enough hair for the "wind in the hair" experience, so there is that....LOL
    • Could be falling edge/rising edge is set wrong. Are you getting sync errors?
    • On BMWs what I do because I'm more confident that I can't instantly crush the pinch welds and do thousands of USD in chassis damage is use a set of rubber jacking pads designed to protect the chassis/plastic adapter and raise a corner of the car, place the aforementioned 2x12 inch wooden planks under a tire, drop the car, then this normally gives me enough clearance to get to the front central jack point. If you don't need it to be a ramp it only needs to be 1-1.5 feet long. On my R33 I do not trust the pinch welds to tolerate any of this so I drive up on the ramps. Before then when I had to get a new floor jack that no longer cleared the front lip I removed it to get enough clearance to put the jack under it. Once you're on the ramps once you simply never let the car down to the ground. It lives on the ramps or on jack stands.
    • Nah. You need 2x taps for anything that you cannot pass the tap all the way through. And even then, there's a point in response to the above which I will come back to. The 2x taps are 1x tapered for starting, and 1x plug tap for working to the bottom of blind holes. That block's port is effectively a blind hole from the perspective of the tap. The tapered tap/tapered thread response. You don't ever leave a female hole tapered. They are supposed to be parallel, hence the wide section of a tapered tap being parallel, the existince of plug taps, etc. The male is tapered so that it will eventually get too fat for the female thread, and yes, there is some risk if the tapped length of the female hole doesn't offer enough threads, that it will not lock up very nicely. But you can always buzz off the extra length on the male thread, and the tape is very good at adding bulk to the joint.
    • Nice....looking forward to that update
×
×
  • Create New...