Dyno Tested: Vacuum Tank Bypass mod
New Member
Joined: 12-30-07
Posts: 84
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From: Warrington PA
did some more reading.....and....
this site is great, really learning alot here........so I ended up ordering the Forge BPV replacement tonight. I think that may be the problem I am having which sets the P2261 code, plus the other codes as well. Hopefully will have it this week and will install ASAP when it arrives. Can't wait..........................................Tom
Doing some searching around. With no issues on the car are people still doing this "mod"? I see many of these older threads and stuff like this was done early on in the tuner years of cobalts but have now moved past it (pill mod ect)
Senior Member
Joined: 04-15-07
Posts: 1,627
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From: Canada , Nova Scotia , Sack Town Baby !!
Maybe its my first day in this site or something. Lol... But what is the pill mod ? 😄 seriously. I have never heard of it ?
Thats my take and ive been around for a while but brand new to LNF's. i read a ton about it and guys did that before HPtuners had really be explored and before 3 bar maps were adapted to work.
Senior Member
Joined: 07-25-08
Posts: 12,450
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From: Florida
Old School technique OBD1 guys use often referred to as "boost jets" installed in line to boost solenoid tricking the computer/actuator to allow more boost. Cobalt guys used to use welding tips to act as a restriction. other OBD1 cars like 300zx TT actually make a kit with them "designed" for the car.
Thats my take and ive been around for a while but brand new to LNF's. i read a ton about it and guys did that before HPtuners had really be explored and before 3 bar maps were adapted to work.
Thats my take and ive been around for a while but brand new to LNF's. i read a ton about it and guys did that before HPtuners had really be explored and before 3 bar maps were adapted to work.
Senior Member
Joined: 05-20-06
Posts: 6,910
Likes: 6
From: Phoenix, AZ
Yeah, back when HPTuners had a very limited number fo tables available for tuning on the LNF, and we couldn't overcome the overboost issues and other things that the current tuner crowd takes for granted.
Heck, the first LNF tables that were accessible had nothing to do with Torque Management and were simply the timing and fuel tables. This was back in 2006 when the 2007 when the Solstice GXP first came out. I also remember reading my first LNF and being floored by the fact that it took nearly 30 minutes to read the stock tune. I was worried the dudes battery was going to die.
Heck, the first LNF tables that were accessible had nothing to do with Torque Management and were simply the timing and fuel tables. This was back in 2006 when the 2007 when the Solstice GXP first came out. I also remember reading my first LNF and being floored by the fact that it took nearly 30 minutes to read the stock tune. I was worried the dudes battery was going to die.
Yeah, back when HPTuners had a very limited number fo tables available for tuning on the LNF, and we couldn't overcome the overboost issues and other things that the current tuner crowd takes for granted.
Heck, the first LNF tables that were accessible had nothing to do with Torque Management and were simply the timing and fuel tables. This was back in 2006 when the 2007 when the Solstice GXP first came out. I also remember reading my first LNF and being floored by the fact that it took nearly 30 minutes to read the stock tune. I was worried the dudes battery was going to die.
Heck, the first LNF tables that were accessible had nothing to do with Torque Management and were simply the timing and fuel tables. This was back in 2006 when the 2007 when the Solstice GXP first came out. I also remember reading my first LNF and being floored by the fact that it took nearly 30 minutes to read the stock tune. I was worried the dudes battery was going to die.
So with switching to a Forge VTA and relocating the MAF, is there a point in this bypass for me? The advantage I see is faster spool.
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