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WALBRO 525 LIMITS

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We put the squeeze to dynoman car when it was on the old combo
Duty cycle on 120s was well over 90% nearing 100 with boost in the 35+psi range.
It did it
but....there was no cushion and the conditions were good.
His car is an little heavier.
We had more pump it was not a 525 he had more fuel sytem than injector.
It was on a stock computer with a very small correction window.
Upgraded the computer and decided from a safety factor to go bigger on the injector to get that cushion back😉
 
We put the squeeze to dynoman car when it was on the old combo
Duty cycle on 120s was well over 90% nearing 100 with boost in the 35+psi range.
It did it
but....there was no cushion and the conditions were good.
His car is an little heavier.
We had more pump it was not a 525 he had more fuel sytem than injector.
It was on a stock computer with a very small correction window.
Upgraded the computer and decided from a safety factor to go bigger on the injector to get that cushion back😉
I’m still running the stock computer . I need to upgrade
 
Originally I wanted to throw 28-29lbs at this thing but its moving along quite nicely even at 21lbs hahah

fuel pressure is solid glad i went with dual 340's for that extra cushion

I cant imagine this 6266 with 28lbs behind it
 
Nothing lasts forever...... This 525 pump was 5 years old and it was giving up.
It did a great job when it was younger though.

OldAndWeak525.GIF
 
No messing around.... went ahead and installed a twin 525 pump hanger kit from Racetronix. She's strong now.
There's a bump in the blue where the 2nd pump is ramping in. I can tweak that by having it come in a bit later.
It's always nice to see fuel pressure that's on the strong side.

Strong Pumps.GIF
 
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