Veger

took a friends fd out 2 c how it compaired 2 mine and noticed in 3rd and W.O.T his boost pattern was 10-spiked very quick to 15 then back to 10 his mods are.

HKS B.O.V
HKS F-CON+GCC
huge exaust, not sure what type but straight through with only 1 back box (very nice quality) with words jazma on.
not cats
HKS hard pips
boost gauge
turbo timer

and runs only on 98ron UK

is this not good ? if not any ideas ?

ta steve

potatochobit

iTrader: (1)

use the HKS F-CON+GCC to put in the trash bin.

and go buy a greddy profec B spec 2

Kento

Your friend's FD is spiking like that during transition because he has a straight exhaust with no cats. It's doubtful that you'll be able to dial that out completely, even with a boost controller, as the increased flow is too much for the stock wastegate to handle that quickly.

Veger

thats of no use to me and tells us nothing. thanx

on another note, thanx kento and what damage if any will this do to his motor.
he has access to a stock exhaust and cats.

Kento

I would recommend putting the stock cat back in until he gets the requisite mods to support an open exhaust. Search a bit and you'll find what I'm referring to.

Continued spiking that high on the stock ECU can possibly result in engine damage, up to and including detonation, broken apex seal, and catastrophic engine damage. Not for certain, but the chances get higher the longer he runs it in the current configuration.

KaoticFdR1

Mine was doing the same thing. HKS DP, GR Mid Pip, PFS Cat Back. it only did it when it was really cold out. I called up Gotham Racing and they said that the Stock Waste Gate would need to be ported to keep up with the increased exhaust flow. So i'm gonna pull it off and see if i can use my CNC to make light work of it.

Veger

thanx Kento and Kaotic.
Just one more little thing he has access to the cat's that came in the boot of my fd, one looks like it would go where a reg cat would fit and the other looks like a downpipe wich should we replace ?

Kento

Replace the midpipe that is in place of the regular cat. The downpipe shouldn't cause any issues with his current setup.

Veger

thanx once again

Trevrxuk

Hey veger, I dont know what a F-con + gcc is lol, is it a boost controller?

I have the same mods on my FD, decat mid pipe with a Jasma Veilside back box.

When i did the de-cat I had the same boost spike at transition, upto 16psi then back to about 13psi on secondry.
I'm suprised his settles back as low as 10psi with a midpipe fitted.

Anyway, I fitted an HKS EVC to control the spike and it works perfectly. Porting the wastegate wasn't needed. I now run it on 11psi stock ECU. I like to live on the edge lol.
Seriously, if he can control boost to 10psi then the mid pipe isn't a problem.
Dont let him re-fit the cat, those things are for emmisions nonsence and gobble loads of power and weigh a ton as you know, throw it in its rightfull place - the bin.

BoostedFd3s

iTrader: (3)

i highly recommend your friend to run with the stock cat as well...i have made the same mistake and blew two of my apex seals...I had to rebuild my motor with money that i had plans for...

Veger

TrevrUK we are in the same boat cause i dont know what a HKS EVC is haha
HKS F-con is a piggyback ECU and the GCC is a Graphic control computer, basicly the GCC lets you lean off or richen the mixture for the piggyback ecu, he found it good for helping the lumpy tickover when cooling down and the big flames it likes throwin (he dont like the big pops on the mortorway even if my kids do).
he aint gonna let it kick the second turbo in till i get a fix for it, hes gonna drive like a girl apparently.
looks like the fav fix is letting him have my cat but was saving it for emergencys haha
If ya could find the time let me know EVC is and where i can get 1 .
btw how far is summerset from doncaster ?

Trevrxuk

Haha I get the 10ft flames too!

Hks EVC is just a boost controller (electronic valve controller). They're quite easy to fit, basically just plumbs into the vac pipe from pr turbo to wastegate actuator. Should then be able to controll boost from 7psi upwards.
A temp fix could be to locate the vac pipe from wastegate actuator to w/g solenoid, cut it and cap off both ends of pipe securely. That should give 7psi boost, which is still pretty quick with a decat.

Somerset is miles mate, about 250/300 I think.

JONSKI

You can also make a restrictor plate. Get a small piece of 1/8" sheet steel or stainless steel and use an exhaust gasket as a template for the stud holes and outer shape. Make the center hole (where the exhaust flows through) diameter between 1.5" and 1.75". Give it a test run and make the hole larger as needed.

Veger

Oh the restrictor plate on the exhaust sounds like a nice cheep fix as i am workshop manager of a import company here in the uk and he is skint due to the petrol prices here haha.

Can this fix be perm of is it just a temp fix ?
hes not looking for max performance as he dont use what he has got he just wanna keep the motor good till he gets if ever a HKS EVC and/or port.

any more input on the vacume pipe cap fix restricting to 7psi or the restrictor plate on the exhaust would be appreciated

ta steve

JONSKI

A restrictor plate can be as permanent as you would like, but you are leaving a good deal of power untapped. If you ever decide the car needs more power, then I would highly recommend enlarging the wastegate port and removing the restrictor plate as your next power modification.

Veger

k looks like am gonna put a restrictor on the zorst then search for some portin theads and try pick up some picys so i can do it myself and save him a bob or 2.
ta fer the info all and wish me luck on the portin seen as at the mo i dont even know what bit 2 port but i have 2 start somewhere. haha.

WaLieN

I apologize for not understanding your UK slang, but to clarify, are you going to try to port your wastegate or your actual intake/exhaust ports?

Veger

gonna restrict the exhaust (zorst) till he can afford or i can figure out how when and where to port the wastgate. from lots of reading and looking at pictures i know its an integeral part of the turbo but i know there is 2 turbos so seen as his car is a daily runner i wont do it till im certain and have enugh picys.

long as it sorts his 15psi spike then its good fer now.

keep forgetting u guys are the other end of the world will try keep the slang 2 a min.

chow fer now.