If Any1 Knows, Plz Help!

Stelios · 10-05-2006, 23:01

I have an octavia rs 2004, i invested some money in a turbo modification...

GT28RS
LARGER AND LONGER EXHAUST MANIFOLD
AUDI RS4 NJECTORS
WISECO FORGED PSITONS
ADJUSTABLE FUEL PRESSURE REGULATOR
TURBODYNAMICS BLOW OFF VALVE
SETRAB FMIC
SETRAB OIL COOLER, OIL FILTER ADAPTOR WITH THERMOSTAT
BMC CARBON BOX FILTER
LARGER MAF HOUSING FROM S3
GREDDY OIL CATCH TANK
BORLA 70MM ENTIRE EXHAUST SYSTEM WITH CATALYST
BOSCH PLATINUM SPARK PLUGS
DYNOTECH ECU REMAP

Everythin is working ok, the only problem i have is that when the car boosts, it does in very wierd way,... the boost can be 1.5 bar at 4000 and then 1.1at 4800, and then 0 pressure at 5000 and the suddenly 1.5 again at 5500, and then 1.3 at 6000... this is different in every gear it is mostly noticable at the end of third gear and mostly in 4 and 5th gear.
i know its the n75, all my efforts to remove it completely, trick it by using a manual boost controller or anythin else have failed,
if u try to do anything with the n75 the car will run 0.4 bar safe, if u try to put the manual boost controller at the hose before the watsegate, it will change nothing also.
i dont understand what controls the boost after the n75 controller has been completely removed.
Even better, the people who made my electronic modification told me that the n75 will b totally ignored from the ecu from now on. it doesnt seem to b working that way.
IF ANY1 KNOWS HOW TO ACHIEVE TOTAL MANUAL BOOST CONTROL OVER THE ENGINE PLZ LET ME KNOW HOW.

i cant drive like this anymore.........

Tom_vRS · 10-05-2006, 23:03

Welcome to Briskoda fella.

Sounds like quite a beast you have there.

Sorry I can't help, I'm sure someone knowledgable will be along shortly!

bengie · 10-05-2006, 23:22

wotcha

finding a more knowlegable garage sounds like a good start

best of luck mate

Sheaf · 11-05-2006, 06:54

Has the car been remapped to raise the boost and change the timing, or are you trying to do it all with a boost controller?

Sounds like you're using BCV which confuses the ecu and messes up boost. Also, is that BOV a atmo one or recirc?

Stelios · 11-05-2006, 22:15

the car boost map has been set to maximum, i have seen the line. the timing is also changed. what is the bcv? and what does it do?> what can i do to get manual boost control in the engine?

EddyH · 11-05-2006, 22:46

A quick look at your spec would suggest the following is needed to be done:

Fit a normal recirculating diverter valve.
Get rid of the manual boost controller.
Put the N75 in as it was standard.
Get a proper remap.

Also I don't see an uprated fuel pump listed on your spec, I hope you have one.

10-05-2006, 23:01	#1
Stelios Briskodian Join Date: Jan 2005 Location: bucharest Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	If Any1 Knows, Plz!!!!!! Help!!!!!! MANUAL BOOST!!! I have an octavia rs 2004, i invested some money in a turbo modification... GT28RS LARGER AND LONGER EXHAUST MANIFOLD AUDI RS4 NJECTORS WISECO FORGED PSITONS ADJUSTABLE FUEL PRESSURE REGULATOR TURBODYNAMICS BLOW OFF VALVE SETRAB FMIC SETRAB OIL COOLER, OIL FILTER ADAPTOR WITH THERMOSTAT BMC CARBON BOX FILTER LARGER MAF HOUSING FROM S3 GREDDY OIL CATCH TANK BORLA 70MM ENTIRE EXHAUST SYSTEM WITH CATALYST BOSCH PLATINUM SPARK PLUGS DYNOTECH ECU REMAP Everythin is working ok, the only problem i have is that when the car boosts, it does in very wierd way,... the boost can be 1.5 bar at 4000 and then 1.1at 4800, and then 0 pressure at 5000 and the suddenly 1.5 again at 5500, and then 1.3 at 6000... this is different in every gear it is mostly noticable at the end of third gear and mostly in 4 and 5th gear. i know its the n75, all my efforts to remove it completely, trick it by using a manual boost controller or anythin else have failed, if u try to do anything with the n75 the car will run 0.4 bar safe, if u try to put the manual boost controller at the hose before the watsegate, it will change nothing also. i dont understand what controls the boost after the n75 controller has been completely removed. Even better, the people who made my electronic modification told me that the n75 will b totally ignored from the ecu from now on. it doesnt seem to b working that way. IF ANY1 KNOWS HOW TO ACHIEVE TOTAL MANUAL BOOST CONTROL OVER THE ENGINE PLZ LET ME KNOW HOW. i cant drive like this anymore......... Last edited by Stelios; 10-05-2006 at 23:39. Reason: help!

10-05-2006, 23:03	#2
Tom_vRS Briskodaholic Join Date: Dec 2004 Location: Fenland, Cambridgeshire Posts: 11,055 Thanks: 623 Thanked 376 Times in 257 Posts	Re: If Any1 Knows, Plz Help! Welcome to Briskoda fella. Sounds like quite a beast you have there. Sorry I can't help, I'm sure someone knowledgable will be along shortly! __________________ 97/R BMW 328i in Boston Green. Don't miss the new DR COLORCHIPS GROUP BUY!

10-05-2006, 23:22	#3
bengie splash!!!! Join Date: Feb 2004 Location: planet earth Posts: 14,971 Thanks: 15 Thanked 129 Times in 112 Posts	Re: If Any1 Knows, Plz Help! wotcha finding a more knowlegable garage sounds like a good start best of luck mate __________________ owner of a skoda octavia 4xvrs3

11-05-2006, 06:54	#4
Sheaf Briskodian Join Date: Jul 2005 Location: South UK Posts: 157 Thanks: 0 Thanked 0 Times in 0 Posts	Re: If Any1 Knows, Plz Help! Has the car been remapped to raise the boost and change the timing, or are you trying to do it all with a boost controller? Sounds like you're using BCV which confuses the ecu and messes up boost. Also, is that BOV a atmo one or recirc? __________________ Parents: '02 Octavia 1.9TDi Me: '99 V Honda Accord Type-R

11-05-2006, 22:15	#5
Stelios Briskodian Join Date: Jan 2005 Location: bucharest Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	Re: If Any1 Knows, Plz Help! the car boost map has been set to maximum, i have seen the line. the timing is also changed. what is the bcv? and what does it do?> what can i do to get manual boost control in the engine? __________________ http://www.insomniaracing.org/galler...os=95:thumbup:

11-05-2006, 22:46	#6
EddyH Briskodian Join Date: Jun 2004 Location: West Yorkshire Posts: 4,897 Thanks: 40 Thanked 26 Times in 26 Posts	Re: If Any1 Knows, Plz Help! A quick look at your spec would suggest the following is needed to be done: Fit a normal recirculating diverter valve. Get rid of the manual boost controller. Put the N75 in as it was standard. Get a proper remap. Also I don't see an uprated fuel pump listed on your spec, I hope you have one. __________________ EddyH Audi S8 Audi A3 2.0 TDI Sport

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