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View Full Version : Bad boost spiking/vf34 map


dcdub23
04-24-2006, 02:22 AM
Hello fellas. I just got my car back on the road with the vf34, sti pinks, walbro 255cc fp, TXS shorty intake and TXS FMIC. Under full throttle in 3rd,4th and 5th i spike 20 psi then drop to 15 then back to 20. It also does it under half throttle from 10psi to 6 as well. Any suggestions? I really need the help. Thanks Jay

TeknoWhore
04-24-2006, 03:07 AM
Are you protuned? If you are running cobbs ots map, your extra mods are probably making it do that. That front mount and intake is a no no with the ots maps. I would take both of those off asap until you get a protune. Did I mention getting a protune?

dcdub23
04-24-2006, 08:07 PM
so a protune sounds great! I read on cobb and i have to use the factory wasegate hose and factory pill to control boost. I found that out about 2 hours ago. Will the intake and fmic mess up my car? Protune, got it!

TeknoWhore
04-25-2006, 02:58 AM
Yes it probably will. It might cause your car to run too lean. You might even be able to get a pdx map through email if you dont want to protune.

parker/slc/gc8fan
04-25-2006, 01:48 PM
If your running the wrong restrictor pill and hoses I garrantee that's most of your problem. (other than modding outside the map reccomendations)

MF-DIF
04-25-2006, 02:05 PM
I agree...the pill is what is causing u the problems. Change that out with the stock pill then go from there. Your car should run fine with the fmic and intake...not to its full potential but i shouldnt give you catastrophic problems.

dcdub23
04-25-2006, 10:29 PM
I changed out the pill and it boosts 16.5 strong now! The only other problem i have i data logged my car using Tari EcuExplorer and it i believe my car is runnin too lean and possibly knocking. IHere is a 3rd and 4th gear pull log if you guys wanna look it over and give me a better understanding! Thanks guys! Jay
http://www.yourfilelink.com/get.php?fid=89189