5500 rpm car misfire at 550hp
#62
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
Ok so it ended up being the coil packs that were bad. They swapped em out and there is no more misfire. Final dyno numbers were. 565 whp and 580tq at 17 psi. I told them to hold off on taking it any higher until I get a twin pump and more injector even though there was room to go. Il post dyno sheet later when they email it to me.
and i'm glad it was an easy problem. 9 times out of 10 it's a part that has gone bad. Stock ignition system is plenty strong. I'm still skeptical that some people have issues with it in the 500hp range and "need" an ignition booster. I would bet if they put brand new coil packs in their issue would resolve instead of just forcing the coil packs to work harder when they are damaged.
#63
i can't remember, is this pumpgas? If so you won't have much more room to go without having detonation issues.
and i'm glad it was an easy problem. 9 times out of 10 it's a part that has gone bad. Stock ignition system is plenty strong. I'm still skeptical that some people have issues with it in the 500hp range and "need" an ignition booster. I would bet if they put brand new coil packs in their issue would resolve instead of just forcing the coil packs to work harder when they are damaged.
and i'm glad it was an easy problem. 9 times out of 10 it's a part that has gone bad. Stock ignition system is plenty strong. I'm still skeptical that some people have issues with it in the 500hp range and "need" an ignition booster. I would bet if they put brand new coil packs in their issue would resolve instead of just forcing the coil packs to work harder when they are damaged.
#66
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
not many around here either. All you need is 1 station though...when a local one shut down i started driving 10 minutes just for fuel.
I have a 15 gallon tank with pump hose on it for backup though. Haven't needed to use it yet.
I have a 15 gallon tank with pump hose on it for backup though. Haven't needed to use it yet.
#75
New Member
iTrader: (11)
is your boost holding steady to redline? who told you you are going to make more power with a twin pump?
You can already see that the turbine is pretty close to maxed out on how your trq takes a total nosedive. It doesnt even hold flat trq for 200rpms.
I'm interested into the miracle your tuner is gonna perform.
You can already see that the turbine is pretty close to maxed out on how your trq takes a total nosedive. It doesnt even hold flat trq for 200rpms.
I'm interested into the miracle your tuner is gonna perform.
#76
I'm going to try the bigger housing for the turbo as well to make more power. But honestly after driving the car I don't even care anymore. Jut Gunna leave it alone. And it's on e85 binder. And I don't like that tq curve either not sure Mabey it's time for a big boy turbo kit. (twins)
#77
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
duh, i just saw it's e85. In all honesty if you aren't going lean now you have plenty of fuel and i wouldn't mess with the system. You are pretty much maxed for a gt35r so I would leave it alone and just be happy. The amount you "might" gain won't be worth the added expense and complexity in the system.
Which single pump is this? the new walbro?
Which single pump is this? the new walbro?
#79
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
ya, turbine housing probably won't fix the drop off in tq. The turbo is just done. I wouldn't scrap the system for a twin turbo setup unless you are planning on really running more power. All that money lost just for 50hp or so wouldn't be worth it. Coming from someone with a 650hp car it's not useful. On the street i keep the boost turned down below 600hp because even with my 305 mickey drag radials i'm spinning through 3rd gear. if you plan on using the extra power on the track then you might benefit but for street purposes it's a waste. That's why i'm switching to a smaller turbo. I have so much on the top end i'm not using so i'm reducing the size so i can have the power i want and carry it longer.
You could just upgrade to a gt37r without wasting a bunch of money to get some extra power.
You could just upgrade to a gt37r without wasting a bunch of money to get some extra power.
Thread
Thread Starter
Forum
Replies
Last Post
etkms
Engine & Drivetrain
29
06-19-2022 06:30 PM
AbyteZero
Engine, Drivetrain & Forced-Induction (DIY)
3
09-22-2015 09:17 AM