My First Dyno Run... Air/Fuel is All over the place!

[QuickClipse2]

I brought my car in for its first dyno run last week to try and find out how much power i was making with 15PSI of boost and all the mods listed in my member profile. For all the other newbs reading this and viewing the chart, it means that im running way too lean at full boost ( I think).

After you have seen my chart what should i do to balance the ratio? I already tried turning down the boost, but the mbc stops turning down at 15 psi. If i take the mbc off there is no way i can keep it from boost spiking on me.

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[midnght]

That graph is weird.

If you are running stock turbo, stock injectors, and around the stock boost level(10-13psi) you should not be running that lean if you dip into the 15psi range. Is 15psi the most boost you are seeing? Or are you getting ALOT of creep?


If you continue to hit boost higher than you are wanting you should go back to using the stock boost control setup. You are running a T-25, a MBC is not really needed. Especially if it is causing you to spike up sooo high.

 

[QuickClipse2]

I think i am getting alot of creep. If i remove the mbc then their is nothing to keep the boost from going up and up i think.

 

[QuickClipse2]

can anyone else help me with my problem? Do i need a better fuel pump or what? Can anyone tell me whats going wrong or is anyone able to diagnose my problem so i can fix it?

 

[gsxtacy]

Looks like you were getting MAD wheel-hop!!!

I have never seen a dyno pull show some many up and down peaks. Usually the pulls show a steady rise and then a slight decline.

Am I right or wrong guys?

Wish it were more linear.

Good luck.

Gsxtacy