Jump to content
SAU Community

Recommended Posts

Hi,

Just wondering when the standard turbo spools up. I havn't actually looked at the turbo to make sure it is standard but i guess it would be.

Anyway it spools up at about 3500-4000rpms. I thought it would be a bit earlier.

Is there anyway to advance the spool up?

I installed a FMIC yesterday and it didn't make heaps of difference. It made it feel more punchier, as in, it hits full boost at once rather than building up.

anyway there seems to be a pretty big flat spot in 2nd when i hit 75km -90km and then 90-100 is good. I heard that resetting the ecu every so often can improve these problems but not sure as I havn't done it yet.

I think a powerfc is next on the agenda.

JaFF

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/
Share on other sites

R33? Flatspot? Running too much boost.

 

Stick around 10-11psi.

 

3500-4000rpm for a R33 stock turbo is way to high.

Thats around the territority of the ol' RB20 running 1 bar or so. (Depending on driving conditions)

I have a R33 S2 and it spools between 3500 and 4500 running standard psi...goes like a dream for me...advan is puttin it up to 10psi for me in couple of weeks and throw it on the dyno and see wats goin on...but i dont see a prob with mine

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-910391
Share on other sites

it goes well. just a lil flat in spots. mainly in second gear- higher revs.

I have a boost controller which is set to 10psi but dont use it daily.

now i have the fmic i probably could run at 10psi. Might try later. Just have no where to test the car properly. 70km speed limits all the way from work to home :D

Was just interested to see whn it should spool up.

JaFF

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-910399
Share on other sites

it goes well. just a lil flat in spots. mainly in second gear- higher revs.

I have a boost controller which is set to 10psi but dont use it daily.

now i have the fmic i probably could run at 10psi. Might try later. Just have no where to test the car properly. 70km speed limits all the way from work to home :D

Was just interested to see whn it should spool up.

JaFF

ive got a stock intercooler and i hae no probs...i get low boost at over 3500rpm then the baby kicks at 4500rpm nicely ...il b interested to see wat happens wen advan puts the boost controller on at 10psi wen at stock boost it goes this well all ready...just pick a straight quite road at night and test it like i did lastnight u can really see how well it runs in the cool air of the night ...im way impressed

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-910405
Share on other sites

uhh, i probably mean hitting boost like 7psi at 3500

I spose it kinda builds up b4 then. havn't taken much notice. since the fmic it seems to hit all of a sudden at 3500. gives that sinking feeling. I just thought it should come on full boost earlier.

still i think i want to get an electronic boost controller (only have turbosmart single stage atm), i've heard they handle things a bit better.

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-910743
Share on other sites

Hey Jaff.

I had a similar problem on my R32 when my ehaust manifold gasket blew out. the turbo just seemed to take longer time/higher revs to start pumping out decent gas. in case you're curious my car made a horrible noise coming from the manifold on startup, sounded like a tractor? weird. give it go before you shell out big bucks. good luck.

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-911163
Share on other sites

meh to rb20det all round..

JaFF: sounds perfectly normal.. One way you can reduce the spool up is to add an exhaust camgear (i noticed a fair change with this in), get cooler air in (shield pod, or air feed it), reduce rotational mass (flywheels, etc), also try reducing the backpressure of your exhaust system will probably help.. maybe a dump pipe or get it heat wrapped. Electronic Boost control also helped mine spool up a tiny bit quicker (or at least smoother).

I think the smoother and faster the engine revs to a certain point, the quicker the turbo will spool. There is probably proper physics there somewhere which somebody can explain.

Link to comment
https://www.sau.com.au/forums/topic/44549-slow-spool-up/#findComment-912107
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...