part throttle surge flutter
#1
part throttle surge flutter
i cant describe the problem to well, but under no boost i am getting surge.. and part throttle i am getting bucking/sputter a little bit. but it drives fine under wot.
evo9
buschur fmic/short route
tial qr recirc -- 11psi spring
ets intake
tomei 270s
supertech springs etc
fullrace manifold
map dump toob
it only started to do it after i installed the tial and fmic
evo9
buschur fmic/short route
tial qr recirc -- 11psi spring
ets intake
tomei 270s
supertech springs etc
fullrace manifold
map dump toob
it only started to do it after i installed the tial and fmic
#7
Evolving Member
Join Date: Jan 2011
Location: Hyde Park, NY
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Sounds like a BOV issue, like they said I'd change the spring, but the part throttle thing might be in the tuning. However over time I've just noticed what my car likes and doesn't like. Every evo is like a child and has it's certain things it doesn't like haha.
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#8
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Location: Maryland
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i cant describe the problem to well, but under no boost i am getting surge.. and part throttle i am getting bucking/sputter a little bit. but it drives fine under wot.
evo9
buschur fmic/short route
tial qr recirc -- 11psi spring
ets intake
tomei 270s
supertech springs etc
fullrace manifold
map dump toob
it only started to do it after i installed the tial and fmic
evo9
buschur fmic/short route
tial qr recirc -- 11psi spring
ets intake
tomei 270s
supertech springs etc
fullrace manifold
map dump toob
it only started to do it after i installed the tial and fmic
I had the same problem with my TiAL 50mm...it ended up being the spring. I think I had the 11psi spring (non colored). I switched to the 9psi (white spring) and it corrected any instance of flutter that I was experiencing.
Just be aware that when you go with a lighter spring, your idling will not be as smooth. My rpm's used to drop from 800 to like 200 and the car would almost stall....I had the car retuned and have since had the rpm's turned up to 1,000 at idle to eliminate any stalling.
Best of luck bro,
Danny
#10
x2... my car flutters when i half throttle it also, so ive just decided im either WOT or babying it lol.. my flutter is all because of my HKS SSQV BOV though