tc fuel pump upgrade. - Toyota Nation Forum : Toyota Car and Truck Forums

randyknight · 03-18-2009, 10:54 PM

ok i searched this fourm and found nothing.... so i would like to hear from some people who have upgraded there factory fuel pump with a walbro 255 or 190 unit... i upraded mine and blew out my factory in tank regulator out, but i had crushed it alittle to up the fuel pressure.... but now i have another stock regulator and i dont want to put the 255 pump back in if its just going to blow out the regulator again.. those things are 130 buck a pop!

thanks for any help u can give.

randyknight · 03-19-2009, 02:30 PM

no one has upgraded there fuel pump in there tc???????

***HATEnFATE*** · 03-20-2009, 09:20 AM

Are you turbo'd or s/c'd?

Why did you upgrade the pump and why do you need a higher fuel pressure?

randyknight · 03-21-2009, 02:58 AM

i am turbo, and i have no money for fuel management..... im just wanting to know if anyone has upgraded there fuel pump in the factory module with no problems.

***HATEnFATE*** · 03-21-2009, 08:49 AM

Well, if you want higher fuel pressure, what you need is an aftermarket, adjustable fuel pressure regulator.

How long have you been t/c'd and running without an engine managment system? I'll get a friend of mine over here to help you with your question...He might be a little bit before he get's here to answer.

randyknight · 03-22-2009, 04:42 AM

i have been running like this for two years with a a/f ratio of about 12.9.. thats acceptable for me.. but when i upgraded to a ssqv BOV i found out that my greddy BOV was causing a boost leak and keeping me at 5 psi... but now it has went up to like 7 and it is running at like 13.9 a/f ratio and thats too lean for me... i have looked at this pump module and i havent really figured out a way to use a riseing rate regulator.

if u havent noticed, i have a 05 camry but the camry and the tc share the same engine platform and i know most people on this site say nothing is interchangeable, but i know it is.. i have a scion tc fuel pump module sitting in front of me next to a 05 camry module and they are the same with the aception of the tc module doesnt have the tank pressure sensor on the top portion of the module..

Menace_121 · 05-27-2009, 01:22 PM

is it 13.9 driving or under boost? im not 100% sure on the tc/camry but when i did a 255 in my cressida i didnt change the regulator or mess with fule pressure at it ran fine, so its kinda hit or miss really, but to be safe you may wanna get a FPR, there not too bad, anywhere from 80-130ish