LPE 2 step users come in!
LPE 2 step users come in! I just installed the 2 step on my camaro. Right now it is a stock short block with a 76mm turbo. Whenever I engage the 2step it starts to backfire but only when I got to 100% throttle, which is about the only way to build any boost at all. Around 1/2-3/4 throttle it doesn't backfire at all. I do not have any timing being pulled right now and was just wondering if anyone else had any experince! I know this is what anti lag is supposed to do (I came from imports) but this is extremely violent backfiring and once again I am pulling no timing!
Thanks
Stephen
Thanks
Stephen
The 2 step is causing random misfires.. It is pretty rough when its active. If i remember right i have mine set around 4300 rpm, and have it pulling 8 degrees of timing, im a m6 car with a GT4276 with a big 1.12 ar, but i still make about 5 psi out of the hole. I can still leave a little harder. You should get a video, but it sounds like its working right.
Chris
Chris
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From: On the Bumper!
If you have it set real low,yeah it will sound like radical backfires. I do believe the instructions state the minimum rpm the 2 step will function effectively.
I tried to launch off the 2 step with a low stall conveter and no TB and it sounded like the engine was about to explode.lol. No harm, but it didn't work.
At 2500rpm with a TB is a very fluid cylinder cutting hold back that launches very nice IMO. The link in my sig is with the 2 step using the transbrake in our 4L60E. It's like a machine gun going off, but I likely
I tried to launch off the 2 step with a low stall conveter and no TB and it sounded like the engine was about to explode.lol. No harm, but it didn't work.
At 2500rpm with a TB is a very fluid cylinder cutting hold back that launches very nice IMO. The link in my sig is with the 2 step using the transbrake in our 4L60E. It's like a machine gun going off, but I likely
Launching!
Joined: Mar 2007
Posts: 250
Likes: 1
From: SoCal
if i do recall those violent backfires are explosions happening inside the turbine side of the turbo which is normal for the 2 step and makes for killer launches, but... i have heard the turbo is worn down more with the 2 step 
If you have it set real low,yeah it will sound like radical backfires. I do believe the instructions state the minimum rpm the 2 step will function effectively.
I tried to launch off the 2 step with a low stall conveter and no TB and it sounded like the engine was about to explode.lol. No harm, but it didn't work.
At 2500rpm with a TB is a very fluid cylinder cutting hold back that launches very nice IMO. The link in my sig is with the 2 step using the transbrake in our 4L60E. It's like a machine gun going off, but I likely
I tried to launch off the 2 step with a low stall conveter and no TB and it sounded like the engine was about to explode.lol. No harm, but it didn't work.
At 2500rpm with a TB is a very fluid cylinder cutting hold back that launches very nice IMO. The link in my sig is with the 2 step using the transbrake in our 4L60E. It's like a machine gun going off, but I likely
BTW mine sounds like a 50 caliber, LOL! I had people pulling over on the side of the road checking their tires and ****! I hope it doesn't blow my exhaust off!
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It only doing it at WOT makes me think it does it is going rich at the transition from closed loop to open loop. What does the wideband read? you may have to adjust the PE in that rpm range?
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Verdad Gallardo This was going to be my next observation. As of now the loud bangs have interrupted my train of thought on the gauges! I'm going to check the wideband on the next go around though! BTW my car is always in open loop!
The backfires on the 2 step are caused by the rich condition of cutting the spark on some of the cylinders and the fuel igniting on the hot parts and other exhaust gases from other cylinders on the way out. How loud and how many backfires depends on how rich you are running the car and the amount of timing in it. Turbo cars are generally going to backfire more as they tend to run richer and run less timing than an N/A setup.
The backfires on the 2 step are caused by the rich condition of cutting the spark on some of the cylinders and the fuel igniting on the hot parts and other exhaust gases from other cylinders on the way out. How loud and how many backfires depends on how rich you are running the car and the amount of timing in it. Turbo cars are generally going to backfire more as they tend to run richer and run less timing than an N/A setup.
all turbo car i see with 2-steps backfire
that is what gets the turbos spin with no load
