reconfigure MAS?

DeathMonk · 03-02-2002, 09:10 PM

I'm writing this for a friends 88 LX 5.0...

What he already has:
FMS 1.6:1 roller rockers, GT-40X Heads, B303 FMS cam, and it's boared 30 over...

He wants to add 24LB injectors, GT-40 upper/lower intake, etc.
What he wants to know is: What can/should he do about his stock mass air sensor? Can he reconfigure the sensor? Does he have to do something with the computer? If so, how would you go about doing it.

THNX!!
NICK

gtsr515 · 03-02-2002, 10:24 PM

An 88 doesn't have a mass airflow sensor, and if it did with the parts you listed, the last thing he would need is 24lb injectors, a fuel pump would be a much smarter move.

DeathMonk · 03-02-2002, 10:31 PM

It's a newer engine....... he put on the stock mas himself when he got the new engine..

A new fuel pump? He has stock air/fuel going GT-40X heads.... A new fuel pump would satisfy his needs?

gtsr515 · 03-02-2002, 10:37 PM

Death....okay, now that we know its MAF, I always suggest a new pump, because the stocker is only 88lph and as it ages is even less than that, EVERY modded 5.0 needs a higher flow pump, as well as a regulator and gauge in my opinion. A 155 -190 pump should do him well for now.

Hozer 88GTConv · 03-02-2002, 11:07 PM

If ou upgrade to 24 lb inj's you will have to get a MAF with a "sampling tube" calibrated for 24 lb injectors. You can do this yourself apparently, but I didn't and don't know anyone who has. There are plenty of benefits anyway from getting a upgraded MAF and flow tube. I have a C+L 73mm, but will be going to a 80mm to satisfy a blowers req's.
Have fun. I have a similar setup and it's great.

306 BLUE GT · 03-02-2002, 11:43 PM

Get a Pro-M 75mm MAF sensor calibrated for 24lb injectors...that way you can take full advantage of the other modifications you plan to do. The stock MAF just isn't going to be big enough for what you want to accomplish....he should seriously look into having the car dyno tested and probably installing a chip as well. So far it sounds like he is on the right track. It should run well.

stanger8172 · 03-02-2002, 11:50 PM

gtsr515,

If you upgrade your fuel pump, afpr, and gauge shouldn't you get bigger fuel rails and lines too? The stock rails and lines can only support 300hp don't they?

gtsr515 · 03-03-2002, 12:02 AM

No sir!, they will support 500 horse all day!

03-02-2002, 09:10 PM	#1
DeathMonk Registered Member Join Date: Mar 2002 Location: MO Posts: 2	reconfigure MAS? I'm writing this for a friends 88 LX 5.0... What he already has: FMS 1.6:1 roller rockers, GT-40X Heads, B303 FMS cam, and it's boared 30 over... He wants to add 24LB injectors, GT-40 upper/lower intake, etc. What he wants to know is: What can/should he do about his stock mass air sensor? Can he reconfigure the sensor? Does he have to do something with the computer? If so, how would you go about doing it. THNX!! NICK

03-02-2002, 10:24 PM	#2
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	An 88 doesn't have a mass airflow sensor, and if it did with the parts you listed, the last thing he would need is 24lb injectors, a fuel pump would be a much smarter move. __________________ Remember...2nd place is 1st place for losers!

03-02-2002, 10:31 PM	#3
DeathMonk Registered Member Join Date: Mar 2002 Location: MO Posts: 2	?? It's a newer engine....... he put on the stock mas himself when he got the new engine.. A new fuel pump? He has stock air/fuel going GT-40X heads.... A new fuel pump would satisfy his needs?

03-02-2002, 10:37 PM	#4
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	Death....okay, now that we know its MAF, I always suggest a new pump, because the stocker is only 88lph and as it ages is even less than that, EVERY modded 5.0 needs a higher flow pump, as well as a regulator and gauge in my opinion. A 155 -190 pump should do him well for now. __________________ Remember...2nd place is 1st place for losers!

03-02-2002, 11:07 PM	#5
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Reconfigure... If ou upgrade to 24 lb inj's you will have to get a MAF with a "sampling tube" calibrated for 24 lb injectors. You can do this yourself apparently, but I didn't and don't know anyone who has. There are plenty of benefits anyway from getting a upgraded MAF and flow tube. I have a C+L 73mm, but will be going to a 80mm to satisfy a blowers req's. Have fun. I have a similar setup and it's great. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

03-02-2002, 11:43 PM	#6
306 BLUE GT Registered Member Join Date: Feb 2002 Location: New Jersey Posts: 15	Get a Pro-M 75mm MAF sensor calibrated for 24lb injectors...that way you can take full advantage of the other modifications you plan to do. The stock MAF just isn't going to be big enough for what you want to accomplish....he should seriously look into having the car dyno tested and probably installing a chip as well. So far it sounds like he is on the right track. It should run well. __________________ BMF 306ci 89 GT

03-02-2002, 11:50 PM	#7
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	gtsr515, If you upgrade your fuel pump, afpr, and gauge shouldn't you get bigger fuel rails and lines too? The stock rails and lines can only support 300hp don't they? __________________ '91 LX convertible , T-5, Centerforce Dual Friction, MSD Blaster Coil, FR 9MM wires, 13* timing, 1.6rr, ported/polished/milled stock heads, 1.94/1.60 stainless valves, March Performance Pulleys, K&N panel, 1"spacer, BBK shorties, 2 1/2" off road H, Summit 2 1/2" catback

03-03-2002, 12:02 AM	#8
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	No sir!, they will support 500 horse all day! __________________ Remember...2nd place is 1st place for losers!