LE5 throttle body on LNF engine?
02-26-2011, 05:30 PM
#1
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LE5 throttle body on LNF engine?
Anybody tried opening up the intake manifold and plugging LE5 on their LNF engine?
was planning to go with straight 3" IC pipings, and 3" ic inlet and outlet.....and using LE5 TB so there'll be no bottleneck.
just wondering if somebody already did it..........and if there are any issues that arised..
was planning to go with straight 3" IC pipings, and 3" ic inlet and outlet.....and using LE5 TB so there'll be no bottleneck.
just wondering if somebody already did it..........and if there are any issues that arised..
02-26-2011, 06:21 PM
#2
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I know there are people running larger throttle bodies but im not sure what they used... i havnt compared a LE5 TB to ours.. wonder if it will bolt up? The last LE5 Tb i saw was fairly small though.. not sure if it will net us any gains.
02-26-2011, 09:40 PM
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zzp had tried this once and said it took a bit of tuning to get it right... something about the ecm has been designed around calculated surface area of the stock throttle body... i cant remember specifics.
02-27-2011, 01:06 AM
#8
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What we found was that if the ECM is not far from stock, it will compensate for the pressure drop change and gains are hard to come by. On the other hand, if the desired air loads are beyond an achieveable threshold, there are gains to be had by increasing the throttle plate diameter with the stock turbo.
On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some.
On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some.
02-27-2011, 02:13 AM
#9
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"On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some."
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
02-27-2011, 02:20 AM
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What we found was that if the ECM is not far from stock, it will compensate for the pressure drop change and gains are hard to come by. On the other hand, if the desired air loads are beyond an achieveable threshold, there are gains to be had by increasing the throttle plate diameter with the stock turbo.
On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some.
On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some.
02-27-2011, 02:38 AM
#11
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"On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some."
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
02-27-2011, 03:43 PM
#12
Former Vendor
"On our S252 turbo swap, we picked up 8whp when I tried the LE5 TB. Unfortunately, throttle control for daily driving was too touchy so I went back to the stock TB. I imagine you could lower the DALs at low load to slow the throttle rate down some."
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
Bummer you had to give up 8hp because you couldn't figure out how to smooth throttle response.
(Oops, did I say that out loud? Oh well.)
On the other hand, when someone else gets within 80 whp as us, the 8whp I left on the table might matter. lol.
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