Location: Allen, TX "Suppose you were an idiot... and suppose you were a member of Congress... But I repeat myself."
I dyno'd exactly a 1hp gain on my old '99 6-speed after adding a new air bridge and smooth coupler. Pretty much within the range of error of the dyno itself...
track tested corvette owner approved
the track is where it matters and i quote from the performance results pages "dyno's are for mustang owners " some one needs to buy that member a beer
no disrespect to ya west coast has them for 149.00 with no logo
track tested corvette owner approved
the track is where it matters and i quote from the performance results pages "dyno's are for mustang owners " some one needs to buy that member a beer
no disrespect to ya west coast has them for 149.00 with no logo
So did you try it? if so what gains did you see at the track?
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2001 Quick Silver C5 Coupe
C5-R 427 - HP Performance Twin 76mm Turbo kit
FLT Level V 4L65-E
many more variables at the track then at the dyno.
Dave
we buy are cars and build them for cruising or hitting the track or the other guys that leave them stock . most of are cars dont like sitting on dyno's they like to be shown off . lets put it this way stock air bridge and accordian coupler restricts the air thats being delivered to the throttle body. so the wide mouth air bridge and smooth coupler has to add somthing . i mean look at how many people are buying those vornado's save the 70 bucks and get the air bridge you can see it and it works . and daves right there are more vairiables at the track but its only a few bucks for the air bridge . its all about what you want and what your looking for
Its the same old story, The mfr claims 25-100 hp if you by my product. Unless you reprogram the PCM, they are just bling-bling. If you like the looks go for it. In stock PCM trim, GM has an adaptive strategy looking for the way the air is flowing. Also, the inside dynamics of the air coupler are for quieting the engine. If you like the SOUND of the air coming in then change the couple but do not change it to get more HP. The stock system can easily handle 500 FWHP from the factory.
Well I do not agree that an aftermarket air bridge will add to performance. I had one and saw nothing at the track. I am a competative bracket drag racer and I know if something I have done changes my times by even .05 of a second. It did not. It did make the engine bay look nice though with the colored cross flags. I think the air intake system can be improved but you need to go from the weakest link first.
1. stock air box
2. engine bay heat
3. throttle body
4. MAF
5. Air bridge
6. accordian coupler
I could be wrong about the order but this is how I approached the problem and with a stock engine you can stop at number 2 and most likely get about all the performance gains you can measure.
[quote=Mike Mercury]I'm not so sure that is needed - at least for WOT runs. The PCM is in open loop (well... "speed density" mode to be more exact) during WOT anyways.
You are correct about WOT, its the decel and idle issues that are the problem. It makes the PCM to go rich/lean.
I'm not so sure that is needed - at least for WOT runs. The PCM is in open loop (well... "speed density" mode to be more exact) during WOT anyways.
.
Tim,
Huh?
WOT=Open loop? - Yes
WOT= Speed Density? - No
The computer is still reading using the MAF at WOT. However, it is not paying attention to the O2 sensors. By definition that is open loop, MAF operation. Speed density is when the PCM relies on the MAP and IAT sensors and the VE table (and ignores the MAF sensor) to calculate air mass.
Yes this is interesting information, but I do not think changing the air bridge to an aftermarket brand will effect anything. I think the same amount of air will pass through either air bridge (aftermarket or stock), regardless of the position of the throttle or whether you are de accelerating or accelerating. In other words in a stock or near stock HP engine there will be no difference because the stock air bridge will flow more air than the engine needs.
Huh?
WOT=Open loop? - Yes
WOT= Speed Density? - No
The computer is still reading using the MAF at WOT. However, it is not paying attention to the O2 sensors. By definition that is open loop, MAF operation. Speed density is when the PCM relies on the MAP and IAT sensors and the VE table (and ignores the MAF sensor) to calculate air mass.
-Matt
Matt; maybe I should of said "Power Enrichment" mode ???
Yes this is interesting information, but I do not think changing the air bridge to an aftermarket brand will effect anything. I think the same amount of air will pass through either air bridge (aftermarket or stock), regardless of the position of the throttle or whether you are de accelerating or accelerating. In other words in a stock or near stock HP engine there will be no difference because the stock air bridge will flow more air than the engine needs.
gee; that was what I was trying to say... just couldn't get it through the keyboard
Corvette Store
Gains from after a market Air Bridge?
