im about to install a new performance airintake but the old one is connected to the airpump and the air flow meter. should i just remove both the air flow meter and air pump? nonturbo 88' gxl

 

Nope, definitely not. You CAN remove the air pump, but you might get a little belt slippage at higher RPM. You CANNOT remove the AFM. It measures all air going into the engine.

If that is thrown off, your car will drive like doodie **** *****. Period. Do a search for CAI in the second gen tech section. Read the FAQ, and download the haynes manual. Links can be found at the top of the page.

Welcome to the club, and good luck, N00b.

 

car will not run without the mass airflow sensor, but if you dont have to wory about emissions some ppl remove the air pump.. for room in the bay

beat me to it^

 

so now i need an adapter, and when i remove the air pump does my 5 and 6 port be able to open

 

nope, if you remove the air pump your auxillary ports will not work anymore and you'll lose some top end as a result

 

and if you remove the airpump and wire the ports open you'll lose some low end as a result

 

Not true. On an S4 the 5+6 ports rely on exhaust backpressure to open them up. If you've still got a cat in your exhaust, it should give it the 1-2 psi necessary to open them up.

 

Both of you are wrong. He has an 88 which means the aux ports are operated by exhaust backpressure, not the air pump. You can remove the airpump, but it is a good idea to either get a dual pully or a yoohoo belt from pineapple racing, otherwise the belt on the water pump will slip.

 

my bad im a turbo guy, did away with my n/a nonsence awhile back forgot about the back pressure thing my bad

 

so when i leave the air pump hole open it wont clog anything

 

Get a block off plate.

 

thanks

 

Won't effect a thing. Just plug the hole in the air filter that would be left wide open.

 

You could use the air pump to make sure your 6pi works, it's so simple. Besides, the air pump barely puts load on the engine, and is super easy to remove if and when you have to.

And read up on "high performance" air filters, thy might not be all you think they are cracked up to be. You'll get better bang for your buck with exhaust... also, a turbo is the only real high performance intake.

Any more info on this yoohoo belt? I looked it up on pineapple's site, still a bit vague on how it works, exactly.

 

Honestly, I ahve never used it, but have heard of people that had good success. Talk to pineapple about how it works, they are generally very helpful.

 

S4's DO NOT use the air pump for the ports, the back pressure from the exhzust opens them. I did an electric conversion on my ports so I dont need BP.

 

Instead of a "yoohoo" belt you could get a dual alternator pulley.

 

where would get something to block of or should i ***** rig it

 

Well when I switched over my intake recently, I sort of just drove around with the air pump going for a little while. It got annoyingly loud after a while, so I went about taking off the air pump belt and it turned out to be a lot easier than I expected. I can feel a slight difference from not actually having the air pump hooked up. I dont plan on removing it as I have to get my car aircared in a bit, but when I do, Ill just have to put the belt back on. Easy as that.

 

I have the same question basically but for a 1989 n/a... I am about to have a custom intake made for mine and I did not think about the air pump...

If I remove it will I lose perfomance in any way and is there any replacement or any way around the MAF...? I am aware I have to have it, but is there some solution so that there is less resistance than the MAF offers...? Like can I take a MAS off of another car or is there and after market MAF that has a larger opening and does not have that big springy cone in it?...?

One last question... I have mentioned doing true duals on here several times... I only have one O2 sensor, naturally... How does that work?

 

Pretty sure for an S5 you need the air pump to activate your 5+6 ports, or something. Not 100% sure how VDI works, someone else can cover it, I'm sure.

Really the only way to rid yourself of the MAF is to go standalone. Do a search on here, I think it was covered that the S4 actually flows better than the S5.

Not 100% sure on the O2 sensor wiring for true deals. Someone else can answer that, too.

Guys, search a bit. You'll find all the information you'll ever need on these topics. Most are covered OVER and OVER and OVER again. Intake, exhaust, more power, etc are all covered. Want more power out of your NA? Search for "Beefy NA."

James

 

With true duals, usually only one pipe gets the sensor, so I suppose the feedback only happens on one rotor. As for the yoohoo, I have a 3L220 myself, but it recently started slipping, and it's less than 1000 miles old. The Pineapple racing yoohoo belt claims to be better than the 3L220, so I'll be going with it myself soon.