Beastmode panda Posted February 5, 2013 Posted February 5, 2013 Hey all, Been having boost spike for a while now, more so obviously due to the freezing cold fresh air! But the car was set up on the RR at 0.8bar, since then it's boosting at about a bar, or maybe just over sometimes. I don't really want to keep pushing the car cause obv the boost will just keep rising. Running gizzmo ebc, standard ecu. Is it causei have a discreat boost leak somewhere? One of the silicone joiners is a bit freyed in the middle where it's hit the floor, but not gone all the way through so i kept using it. Any suggestions? Quote
iamlegend Posted February 5, 2013 Posted February 5, 2013 (edited) get after market ecu and map Edited February 5, 2013 by iamlegend Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 Not really an option, i'm avoiding managment and going forged as i'll be selling the car in a few months and i'll never get that money back. So other than the obvious managment upgrades.. Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 If you're asking if i am, i'm not. Just internally gated td04. Quote
Amjad Posted February 5, 2013 Posted February 5, 2013 A map isn't going to help it from creeping Ext WG will help I think, also you can restrict the intake Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 The turbo is just meshed at the moment! But i think i'm going to put the filter relocation back on today and see how that goes for a bit!edit - do you think the meshed turbo is adding to the cause of spiking? what what about the boost leak suggestion? Quote
Amjad Posted February 5, 2013 Posted February 5, 2013 Not sure about boost leak, but if it was leaking, wouldn't it give a lower reading? With the relocation it'll still probably creep as it gives a larger surface area for intake, but if you cover it with something that might help Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 True yeah, it's just i googled it and someone said something about boost leaking but yeah that makes sense that boost would drop off not increase lol. Hmmm, well i'll try the filter on, im scepticle as to weather a filter makes better performance or not comapred to meshed haha. The never ending debate . Anyway, anyone have any more ideas? I've also shortened the boost controller vacuum pipes to the turbo. And i heard that harder vacuum pipes are better too? Quote
pick1 Posted February 5, 2013 Posted February 5, 2013 External gate is the one sure way to avoid boost creep as the ex-gate holds pressure alot more stable Quote
Danb Posted February 5, 2013 Posted February 5, 2013 the is too much air going into the turbo and it cant cope with it, so you need to either increase the wastegate size, or restrict the air going in. So either port the wastegate/go external gate or put the efi pipe and air filter back on and that should help. The colder denser air will make it spike more, so i would also suggest turning the boost down for the colder days Quote
StuDoc 72 Posted February 5, 2013 Posted February 5, 2013 (edited) Port the wastegate. Restrict the air filter. Does it have FMIC? What about exhaust wise? Basically creep is caused when the boost gets caught somewhere and it cannot flow. Like when a crowd of people try and filter through a small door. It causes congestion, so anyting that will let the flow move better will reduce the creep. Edited February 5, 2013 by StuDoc 72 Quote
StuDoc 72 Posted February 5, 2013 Posted February 5, 2013 the is too much air going into the turbo and it cant cope with it, so you need to either increase the wastegate size, or restrict the air going in. So either port the wastegate/go external gate or put the efi pipe and air filter back on and that should help. The colder denser air will make it spike more, so i would also suggest turning the boost down for the colder days Damn I was too slow lol. Quote
Chris_GlanzaV98 Posted February 5, 2013 Posted February 5, 2013 Why dont you go for like EMB and then when time comes to sell either take it off and put standard ecu on or sell it with the car and add it too the price mate ? why you selling Quote
StuDoc 72 Posted February 5, 2013 Posted February 5, 2013 Management wont fix the boost spike. It will only allow you to run higher boost. Quote
Amjad Posted February 5, 2013 Posted February 5, 2013 I don't know why people keep saying ECU lol creeping boost isn't exactly something you want. Sure an ECU would solve fueling but I'm sure Rob is after stable boost so he doesn't need to worry about it creeping up and over the set levels when driving hard Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 Haha yeah i duno how people keep suggesting an ecu either hahaha. Stu that is great help mate thanks a lot for that! I just bodged the air filter on and noticed that the boost didn't creep/spike as much as before. So like you said it's deffo sending too much air in the turbo! Interesting to say the least though. I've put it back to mesh for the mo until i get my PAS delete kit so that bit fucking shitty pump can go so there will be more room for a filter then i'll put the filter back on for sure! Thanks so much for the response. Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 Sorry stu also to your questions; FMIC - Yes, a very big one lol. Exhaust - Straight through 2.5" no boxes or silencers. Shitty toyosport mani with RW-development screamer/decat combo. Quote
StuDoc 72 Posted February 5, 2013 Posted February 5, 2013 Most likely down to the air filter and the wastegate then mate. Best thing you can do to any internally gated turbo is to bore out the wastegate to as large as the penny will still seal it. This way allowing greatest control over pressures. Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 Yeah. Righteo that sound good man, can i do that myself? What would be the work involved? Would be my first time at doing that sort of thing you see. Quote
TrisK Posted February 5, 2013 Posted February 5, 2013 http://www.toyotagtturbo.com/forums/showthread.php?40945-How-to-fit-an-aftermarket-manifold-and-port-the-wastegate-* Quote
StuDoc 72 Posted February 5, 2013 Posted February 5, 2013 Nice one trisk saved me alot of typing lol. Quote
Beastmode panda Posted February 5, 2013 Author Posted February 5, 2013 How much do i grind/port whatever out of inside the w/g then? Just till so when the wastegate it shut there is obv no gaps for air to leak yeah? Quote
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