tips for geetting a turbo to spool faster

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khubner1

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hey guys im looking for some tips to make my turboo spool just alil faster.

the turbo is i'm told an evo 3 big 16g. it is attached to a 4g93 and the exhaust manifold should be ported but can't confirm since i told my mechainc to do the swap and didn't get a chance to check before everything was bolted up. i will check when i do the awd conversion.

so as it stands by watching my boost guage from idle im starting to build boost by 3k and with foot flat to the floor see full boost 10psi about 5k maybe a touch later. exhaust is 3" from the dump back stock dump in use. and no boost tee or controller is being used (wastegate pressure only)

i have the car booked in for some power runs next tuesday so i should be able to supply a boost curve and power figure then. but before i get on the dyno i want the best from the car. i'll probably have a controller installed by that time to wind in some more boost safely.

so im open to peoples ideas to bring on boost quicker.
 
That's what a boost controller is for - merely to control the boost to its best.

Generally you set desire boost you want and fine tune the settings on the controller to optimal spooling and no spikes.

Greddy prospec II dual controller works nicely
 
I was getting 17psi by 3800rpm with an Evo TD05H on my GSR.

Opening the manifold outlet to match the exhaust housings entry is important, as is how you have the intercooler piping routed.
 
my piping runs over the manifold to the inter-cooler 600x300x76 in size then follows the factory cold-side. piping is 2.5" right round except the straight section over the manifold which is 2"

my main reason for the query is everyone claim they get it so soon and before i swapped to the td05 i had the stock 04L and it came on hard and fast! now i will admit it had a sticky waste-gate flapper so it probably free boosted it's way up there so quick. so the only reason i can think of for it being so slow is just running waste-gate pressure and or possibly not having a ported manifold.

i'm tossing up between
http://www.ebay.com.au/itm/Gizzmo-MS2-Electronic-Boost-Controller-turbo-timer-/170577503558?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27b7362546
i can go and grab that one or it's little brother locally tomorrow
this
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=190646288693&category=43807&sspagename=rvireg:1:1
this
http://www.ebay.com.au/itm/TURBOSMART-eBoost-E-BOOST-STREET-ELECTRONIC-BOOST-CONTROLLER-/200720658696?pt=AU_Car_Parts_Accessories&hash=item2ebbe23108
or
http://www.ebay.com.au/itm/HDi-electronic-boost-controller-EBC-R-AU-Free-shipping-/350420341605?pt=AU_Car_Parts_Accessories&hash=item5196ae1365

i like the eboost 2 but the prices seem alil steep for me
 
I looking at some ecmlink logs of my big16g on a 93t with evo ic and piping.
I am just making boost at 2700 (.5psi)
My boost peaks at 8psi at 3600 before the boost drops back to 5psi at 3800
I have 2.4 psi at 3k
If it continued to build boost to 17psi I think it would be around 4k but this is speculation

I know I have bad wastegate control (or boost leak) and will hand over control to a ebc very soon.

But I sharing so that you can compare
 
i'd probably set it around 13 psi out of the box. until i pull my finger out and go for some cams and adjustable gears.

the power bug is biting!

i'm probably nitpicking as it's been 8 or so months since i went turbo charged so i'm probably getting used to the power. but there is a noticeable change in the cars response around 5-6 psi which should be visible when the car gets run on the dyno.

i did have an issue with it blowing a hose off but that has since been fixed. i'll knock up a leak tester on Thurs and really check it) when leak testing the bov should be blocked right?

also whats the base timing supposed to be on these i had it set at 10' btdc once i got it in the car will check it to make sure it's still right after changing the o-ring on the cas
 
Yes, there is a little brown plug on the firewall near the brake booster (next to a blue plug), u need to take the plug off and and find a way to ground it, either aligator clips from the plug to the chassis or just a wire
 
That is correct, then you adjust the biss screw after you adjust the timing, have it sittin on 700rpm +- 50
 
I used to have a TD05 big 16g 7cm housing on a 4G93. Used to get 10psi before 3000rpm and 32psi about 4000rpm.
It did have a different manifold and microtec on it but 5000rpm for full boost seems like something is definatelly wrong. (even my GT30 make 28psi before 4500rpm.)

I'd be looking at a good boost controller to stop wastegate creep (even if you leave it at similar max boost pressure as it is now)

Regards
Jason
 
i did have to tilt the wastegate actuator slightly to clear an engine mount but i was sure the flapper was completly shut i'll check again by pulling the pin and seeing if i can close the flapper anymore (i.e not have the flapper and actualtor line up)


since doing the fix for the bursting conection it does seem to be alil better. still slow but i think the engine response is due to the far off timing
 

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