Evo 8 Boost
restrictor pill....restricts. It doesn't allow you to boost a certain amount and creates taper...removal of it allows you to boost more and with less taper...
...it will inhibit the true power from the flash until it is removed
...it will inhibit the true power from the flash until it is removed
Evolving Member
Joined: Dec 2003
Posts: 410
Likes: 0
From: Vancouver, WA
Originally Posted by JaReDbOy
do you have an exhaust?
if not thats probably why ur only getting 17.5
i mean stock i always got 19 then taper to 16, and then once i got my exhaust it went to 21 max without any other mods. so exhaust does make an amazing difference for our cars.
now my greddy profec b isnt a MBC, its an electric boost controller ( i say electric not electronic cuz theres no display or anything- just knobs to turn the boost up and down) and i cant stress enough- this is just to control my max boost-- it changes so drastically with the weather-- i have to turn it waaaay down in the mornings or else im boosting 25+
Lastly, I wanted to mention Ive had my car over 2.5 years now and i started to mod it about 6 mos after I got it. So ive had these mods and have been boosting 22 psi and more for about 2 years now and my car hasnt blown up yet! so I think its fairly safe. but I guess we'll see.. i just hit the 50k mark....
if not thats probably why ur only getting 17.5
i mean stock i always got 19 then taper to 16, and then once i got my exhaust it went to 21 max without any other mods. so exhaust does make an amazing difference for our cars.
now my greddy profec b isnt a MBC, its an electric boost controller ( i say electric not electronic cuz theres no display or anything- just knobs to turn the boost up and down) and i cant stress enough- this is just to control my max boost-- it changes so drastically with the weather-- i have to turn it waaaay down in the mornings or else im boosting 25+
Lastly, I wanted to mention Ive had my car over 2.5 years now and i started to mod it about 6 mos after I got it. So ive had these mods and have been boosting 22 psi and more for about 2 years now and my car hasnt blown up yet! so I think its fairly safe. but I guess we'll see.. i just hit the 50k mark....
Originally Posted by evolucion
Is this possible, so you're saying if I upgrade my stock exhaust I should see higher boost? But I thought stock psi= 19 with no mods I assume. Let's just hope you're right about this. I'm planning on getting a new exhaust next feb. wish me luck.
Evolving Member
Joined: Jul 2005
Posts: 147
Likes: 2
From: Australia
Originally Posted by Evoryder
restrictor pill....restricts. It doesn't allow you to boost a certain amount and creates taper...removal of it allows you to boost more and with less taper...
...it will inhibit the true power from the flash until it is removed
...it will inhibit the true power from the flash until it is removed
If you have a flash for example - is it as simple as removing the pill or is there more to it?
Originally Posted by Evoryder
12psi = bad stock boost controller... it happens....slap a boost gauge and manual boost controller on and crank it up to 20/21 and call it a day.
what's the point of the 22psi vids again? ...i have a profec b spec II + dynoflash(+ more) and i hold 22.5-22psi all day....22psi stock...highly doubt it ...19psi stock w/ taper due to restrictor pill...u take out the restrictor pill boost may go higher than usual
what's the point of the 22psi vids again? ...i have a profec b spec II + dynoflash(+ more) and i hold 22.5-22psi all day....22psi stock...highly doubt it ...19psi stock w/ taper due to restrictor pill...u take out the restrictor pill boost may go higher than usual
So we just wanted a video to verify that.
Yea the exhaust will definately give you more boost- now again i did the whole thing-- 3 inch downpipe, hi flow cat, and catback. so i cant comment if you only do a catback exhaust for example. I just know i did my intake and BOV and gauges first, then i did my exhaust and saw it started hitting 20.5- 21 psi without any tuning, boost controller or anything else. Lastly i did the boost controller and flash and im right where im at now
In any event, i dont think you will ever be sorry for doing an exhaust on your car... ever.... ( unless it sounds crappy!)
Originally Posted by navysevo
i hit 175 in my evo ... hehe
Since getting the flash which removes the speed governer from what i understand, i havent tried. Ive hit 140 a few times but stopped!! 150 is high enough for me. lol.
Originally Posted by boomtown
Bingo - thank you Evom!
If you have a flash for example - is it as simple as removing the pill or is there more to it?
If you have a flash for example - is it as simple as removing the pill or is there more to it?
Evolving Member
Joined: Jul 2005
Posts: 147
Likes: 2
From: Australia
Haha I was trying to make the question simple and just made it more complex =/.
I dont make any changes to my car without retuning. What you are saying is that if I remove the pill and make no other changes to the car (other than a retune) that the taper should be reduced and there will no negative side effects (assuming it is a proper tune). Correct? Or is removing the pill not enough - you need an MBC as well as a retune? (I have a standalone ecu which is why I use the term retune instead of reflash).
I dont make any changes to my car without retuning. What you are saying is that if I remove the pill and make no other changes to the car (other than a retune) that the taper should be reduced and there will no negative side effects (assuming it is a proper tune). Correct? Or is removing the pill not enough - you need an MBC as well as a retune? (I have a standalone ecu which is why I use the term retune instead of reflash).
you don't need a mbc...some evo's have crappy stock boost controllers and require a mbc / the wastegate to be bypassed. Removal of the pill will have no ill effects if you are tuned afterwards...wouldn't hurt to have a mbc though.
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