HELP only 5lbs of boost!

Reply Subscribe

Thread Tools

Search this Thread

10-20-06, 09:56 PM

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

HELP only 5lbs of boost!

okay just dropped a new motor in my 89fc tII got the turbo fully rebuilt and installed a avcr along with my s-afc that i had on it before , everything checks out on the avcr but still no more boost , i want about 9-10 lbs but somethin is tellin me to go kick rocks , can someone help please this is pissin me off.

Reply Like

10-20-06, 10:04 PM

LaRazaUnida

Senior Member

Join Date: Jul 2003

Location: North Texas

Posts: 648

Likes: 0

Received 0 Likes on 0 Posts

Do you have a boost controller and after market boost gauge? Leaks will cause MAJOR boost drop.

Reply Like

10-21-06, 10:07 AM

ryderX

Senior Member

iTrader: (1)

Join Date: Nov 2005

Location: pueblo

Posts: 346

Likes: 0

Received 0 Likes on 0 Posts

i had that problem, but when i got a downtube it jumped up to 12, so then i got a MBC and ported the wastegate!and now im pushing 8!

Reply Like

10-21-06, 10:08 AM

LaRazaUnida

Senior Member

Join Date: Jul 2003

Location: North Texas

Posts: 648

Likes: 0

Received 0 Likes on 0 Posts

^^
Are you talking about when you got a 3in downpipe? How big did you port your wastegate?

Reply Like

10-21-06, 09:27 PM

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

i have a aftermarket guage , and aftermarket controller , its all sealed up pretty tight , i even raised it to 1 bar and still 4 1/2 -5 lbs

Reply Like

10-21-06, 09:46 PM

BASTARD

iTrader: (4)

Join Date: Dec 2003

Location: NorCal

Posts: 2,281

Likes: 0

Received 3 Likes on 3 Posts

did you use rags to keep stuff from falling in to your intercooler pipes while it was apart?

Reply Like

10-22-06, 12:32 AM

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

yes

Reply Like

Trending Topics

1993 Hardtop Part-Out

14

450
Engine flooding while running

9

173
1993 RX7 FD Touring, new shortblock, needs re-title

8

518
Still twin- Should I keep the air pump?

7

273
modern single vs sequential twins?

6

161

10-22-06, 12:33 AM

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

what would that do if i didnt ? i know i did but how would that change things ?

Reply Like

10-22-06, 12:41 AM

LaRazaUnida

Senior Member

Join Date: Jul 2003

Location: North Texas

Posts: 648

Likes: 0

Received 0 Likes on 0 Posts

Have you done a pressurized leak test?

Reply Like

10-22-06, 10:00 AM

#10

ryderX

Senior Member

iTrader: (1)

Join Date: Nov 2005

Location: pueblo

Posts: 346

Likes: 0

Received 0 Likes on 0 Posts

yes it was a 3" downtube, and i ported my WG to HUGE, no about 2 times as stock

Attached Thumbnails

Last edited by ryderX; 10-22-06 at 10:03 AM.

Reply Like

10-22-06, 10:15 AM

#11

Aaron Cake

Engine, Not Motor

iTrader: (1)

Join Date: Feb 2001

Location: London, Ontario, Canada

Posts: 29,789

Likes: 0

Received 108 Likes on 91 Posts

Quote:

Originally Posted by Rx713B_RE

Stock exhaust and intake? And did you bypass the stock boost control solenoid?

Reply Like

10-22-06, 01:03 PM

#12

BASTARD

iTrader: (4)

Join Date: Dec 2003

Location: NorCal

Posts: 2,281

Likes: 0

Received 3 Likes on 3 Posts

if you used rags, then you may have left one in your pipes... happens all the time to forum members

Reply Like

10-23-06, 02:50 AM

#13

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

its a full 80mm exhaust and aftermarket intake , does the boost control solenoid get removed when you do emissions removal? im not to sure where the solenoid is , and we double checked for rags lol

Reply Like

10-23-06, 02:55 AM

#14

myfc3s

That's what she said...

iTrader: (2)

Join Date: Jul 2005

Location: Socal

Posts: 572

Likes: 0

Received 0 Likes on 0 Posts

detach the wastgate hose and leave it closed. Be careful not to overboost.

Reply Like

10-23-06, 10:09 AM

#15

LaRazaUnida

Senior Member

Join Date: Jul 2003

Location: North Texas

Posts: 648

Likes: 0

Received 0 Likes on 0 Posts

Quote:

Originally Posted by myfc3s

detach the wastgate hose and leave it closed. Be careful not to overboost.

Will that detect if there is a bad wastegate?

Reply Like

10-23-06, 02:20 PM

#16

Aaron Cake

Engine, Not Motor

iTrader: (1)

Join Date: Feb 2001

Location: London, Ontario, Canada

Posts: 29,789

Likes: 0

Received 108 Likes on 91 Posts

Quote:

Originally Posted by Rx713B_RE

its a full 80mm exhaust and aftermarket intake , does the boost control solenoid get removed when you do emissions removal? im not to sure where the solenoid is , and we double checked for rags lol

Check the FSM to confirm whether your solenoid is present...

Reply Like

10-23-06, 05:31 PM

#17

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

k ill check it out where would it be located ?

Reply Like

10-24-06, 03:40 AM

#18

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

and i dont have a factory service manual

Reply Like

10-24-06, 07:29 AM

#19

My5ABaby

Rotaries confuse me

iTrader: (7)

Join Date: May 2006

Location: Murfreesboro, TN

Posts: 4,219

Likes: 0

Received 3 Likes on 3 Posts

Quote:

Originally Posted by Rx713B_RE

and i dont have a factory service manual

Look at the FAQ section of this forum. It has links to them free online that you can download. I also chose to print them.

Reply Like

10-24-06, 07:35 AM

#20

RETed

Lives on the Forum

Join Date: Feb 2001

Location: n

Posts: 26,664

Likes: 0

Received 16 Likes on 15 Posts

Did you change anything in your fuel system?
Did you change the ECU or add something that can control fuel?

-Ted

Reply Like

10-24-06, 02:31 PM

#21

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

Stock injectors , fd fuel pump, safc, avcr, full 80m exhaust, huge front mount, fcd, emissions removed, i think thats pretty much all thats dont to the car , i have 680 cc injectors sitting there but i want to make sure im gonna run more than 5 lbs before i throw them in

Reply Like

10-24-06, 02:33 PM

#22

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

but everything is rulling nice and the way it was before when i was pushing 10lbs

Reply Like

10-24-06, 10:27 PM

#23

RETed

Lives on the Forum

Join Date: Feb 2001

Location: n

Posts: 26,664

Likes: 0

Received 16 Likes on 15 Posts

What are the S-AFC settings?

-Ted

Reply Like

10-25-06, 01:22 AM

#24

Rx713B_RE

Full Member

Thread Starter

Join Date: Sep 2006

Location: OR

Posts: 63

Likes: 0

Received 0 Likes on 0 Posts

id have to look but i know everything is **** , cause its still on the settings when i was pushing 10lbs on the old motor so i dunno , i think it might be something with the engine wiring , do you think that could be a possibility ? i can get a new harness and starter harness for 100 shipped , sound like something i should do ?

Reply Like