MicroSquirt.com read only forum (Jan.15,2018)

Short update - I did the boost leak test and fixed all the leaks I had, spools a bit faster, but still a hell of a lot slower than it should...

Any tips to correctly set up a boost leak test? Do I need to block off the BOV? What about the throttle plate?

I disconnected my wastegate and took off the MBC to run straight off the spring. It still built boost really slow

Guess I'll have to rig up a boost leak cap

Boost leak on a MAP driven car would show exactly what you are experiencing...... Check for tears on connectors etc.

At the higher RPMS it will easily be able maintain a boost level of 10 psi. If you were running something nutty like 30.... you may notice it falling off.

The other possibility is ...

Well the guy that I based my chart off of (very similar setup) said he hits 10lbs at 3100rpm, so I must have a leak somewhere.... do a boost leak test,
then get your a/f closer to 12.5:1 around 0 psi to about 3psi

then get to a dyno and start bumping the timing up until you stop making anymore tq ...

Are you sure you have the tial hooked up to the MBC correctly.

What spring are you using....... is you a 0.8 bar spring. (~11psi)

I would disconnect the MBC totally for now and see if the wastegate stays shut.

The spring will hold it solid.

P.S You are running similar timing at boost that I am ...

Well the guy that I based my chart off of (very similar setup) said he hits 10lbs at 3100rpm, so I must have a leak somewhere....

I'm not a v8 expert but at 100kpa v8's with short intake runners should run more like 35 degrees of timing at high rpm's....

if i was you i would reduce the boost to abslute minimal i can (or completly disable it if you can) - just jam the wastegate fully open.
advance timing at 100kpa. advance 2 ...

Hey guys, heres the setup - stock 95 Cobra 5.0 longblock, DIY intercooled kit with MasterPower 60-1 .70/.81 p-trim, home depot style MBC, Tial 38mm WG, Tial 50mm BOV, and 3.5" OPEN downpipe, MSD6AL. Running MSnS-E 024s9

The guy who built the kit said with his stock computer in boost he was seeing ...

Quick update: Car is running like a beast

I messed around a while trying to get the CLT sensor to read or figure out why it wouldn't, I checked at the plug and it was getting power. So I checked Megatune and it was reading again.

I started it up last night and re-flashed the old tune again. Took ...