boost figures

**brett craig** · Friday 23rd July 2010, 16:22

Can someone tell me the ingear boost figures for a hlm 304 ?

i'm starting to get very piszed off with the car now, with or without the remap, with a mbc or not it hits 10psi in 2nd and 3rd gear, with the traction off it wont even spin the wheels in first !!!

ive changed every single hose on the car and bought proper clamps for the rip kit, ive adjusted the actuator so it is halfway over the hole, only thing left i can think of is a weak bcs but i still got the same readings with a mbc,

talk about pulling your hair out !!!! next things going to be a can of petrol and a match......

**T5frankie** · Friday 23rd July 2010, 16:30

my car is standard and boosts at 10 psi in 2nd 3rd and 4th sometimes it overboosts and hits 12 psi but it dont like it and starts jerking, maybe its your gusge can you feel the difference with re-map or mbc?

**brett craig** · Friday 23rd July 2010, 16:35

to be honest mate it feels standard ! the pick ups no different, the mbc certainly felt quicker by a long way

i know hamish said that its a simple plug in job but will it still need the battery disconecting to rest the bcs ?

**Jamest5r** · Friday 23rd July 2010, 16:36

Originally Posted by brett craig

Can someone tell me the ingear boost figures for a hlm 304 ?

i'm starting to get very piszed off with the car now, with or without the remap, with a mbc or not it hits 10psi in 2nd and 3rd gear, with the traction off it wont even spin the wheels in first !!!

ive changed every single hose on the car and bought proper clamps for the rip kit, ive adjusted the actuator so it is halfway over the hole, only thing left i can think of is a weak bcs but i still got the same readings with a mbc,

talk about pulling your hair out !!!! next things going to be a can of petrol and a match......

You should start but setting the actuator with a pressure guage about 4psi with your 16t, its not something just to be set by eye mate, when you know thats right you can look at other things but it does sound like you have a leak somewhere and they can be very hard to find, i spent days looking for a leak in mine and in the end went to hamish to borrow his smoke machine and found it was leaking from the throttle body, hose and clamp looked perfect to me...would never of found it otherwise.

**T5frankie** · Friday 23rd July 2010, 16:38

Originally Posted by brett craig

to be honest mate it feels standard ! the pick ups no different, the mbc certainly felt quicker by a long way

i know hamish said that its a simple plug in job but will it still need the battery disconecting to rest the bcs ?

im sure is supposed to boost at 16 psi on a hlm????

**T5frankie** · Friday 23rd July 2010, 16:38

Originally Posted by leighkaicraigmia

im sure is supposed to boost at 16 psi on a hlm????

mine is booked in in 2 weeks cant wait lol

**brett craig** · Friday 23rd July 2010, 16:41

the only access i have to a smoke machine is 20 sterling red fags lol, i'm tempted to put the whole car back to standard to see if that cures the problem, the actuator was very weak though, almost as loose as my mrs, so it was only tightend 1.5 turns, its holding to the redline from 2k no problems but the boost has not changed regardless of what i have changed,

**brett craig** · Friday 23rd July 2010, 16:42

Originally Posted by leighkaicraigmia

im sure is supposed to boost at 16 psi on a hlm????

hamish said to go for a run in 4th and it should hold around 18psi, but its 10psi in any gear atm

**Jamest5r** · Friday 23rd July 2010, 16:45

Give the actuator another turn then mate and see what happens but do it carefully, you could get one of those spray bottles with some soapy water in and spray around all the joins and see if you get any bubbles anywhere when reving and backing off, not the best method i know but done it myself.

**brett craig** · Friday 23rd July 2010, 16:47

Originally Posted by jamest5r

Give the actuator another turn then mate and see what happens but do it carefully, you could get one of those spray bottles with some soapy water in and spray around all the joins and see if you get any bubbles anywhere when reving and backing off, not the best method i know but done it myself.

do you know what mate, i'm going to give the soapy method a try, saves me stripping the lot. cheers for that.

**Jamest5r** · Friday 23rd July 2010, 16:48

Originally Posted by brett craig

hamish said to go for a run in 4th and it should hold around 18psi, but its 10psi in any gear atm

Those maps will go to 1.2 bar in 4th then back off a little, start by taking the mbc off mate and go from there as i said above, defo sounds like a leak or actuator prob.

**brett craig** · Friday 23rd July 2010, 17:07

well been outside for 10mins with soapy water and found the following..............

2 small leaks on the crossover pipe from turbo to top intercooler, 1 quite large leak from bottom intercooler to idle control valve, 1 small leak on bottom intercooler hose.

mbc was removed before remap mate so just silicone hoses now,

could that list loose me 8psi that easy ?

**JelT5** · Friday 23rd July 2010, 17:10

Originally Posted by brett craig

well been outside for 10mins with soapy water and found the following..............

2 small leaks on the crossover pipe from turbo to top intercooler, 1 quite large leak from bottom intercooler to idle control valve, 1 small leak on bottom intercooler hose.

mbc was removed before remap mate so just silicone hoses now,

could that list loose me 8psi that easy ?

Definitely! Hopefully you'll enjoy the remap now

**brett craig** · Friday 23rd July 2010, 17:23

Originally Posted by JelT5

Definitely! Hopefully you'll enjoy the remap now

well ive sealed all the leaks except for the idle control valve, no bloody clamps left !!

hopefuly this will now be sorted, if not then actuator is next on the list followed by bcs

**brett craig** · Friday 23rd July 2010, 17:50

all leaks now found and sealed, just taken the car up the road again, 1st,2nd,3rd,4th all foot to the floor and guess what ???? 10psi !!!!

car certainly more responsive now but enoughs enough.

**t5_monkey** · Friday 23rd July 2010, 18:01

Originally Posted by brett craig

all leaks now found and sealed, just taken the car up the road again, 1st,2nd,3rd,4th all foot to the floor and guess what ???? 10psi !!!!

car certainly more responsive now but enoughs enough.

sounds like its just running 10psi stock map somehow?

**Jamest5r** · Friday 23rd July 2010, 18:02

Your making good progress now mate, just adjust the actuator and you should be there, just go half a turn at a time.

**brett craig** · Friday 23rd July 2010, 18:07

Originally Posted by t5_monkey

sounds like its just running 10psi stock map somehow?

its certainly not stock as when the boost comes in 4th gear it picks up very well, just to 10 psi !

as for the actuator james will adjusting the actuator not put to much power into the engine to early ? or will it still build gradual ?

**Jamest5r** · Friday 23rd July 2010, 18:15

Just do it half a turn at a time and you will be safe, max boost will be 1.2 bar in 4th when you get it right, it still build gradual but take your time and be sensible build the power to wot gently you will be fine mate, you will only cause damage if you are silly and make 3 or 4 turns in one go and floor it.

**brett craig** · Friday 23rd July 2010, 18:48

well ive gone up 1.5 turns upto now and the car feels a little quicker but according to the gauge ive actualy dropped pressure !

can tightening have the opposite effect ?

ive even moved the gauge to make sure its not pinching