Engine Dyno Testing LS3 Intakes INSIDE!! LS3 vs Ported vs FAST
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From: Texas Speed TX
Engine Dyno Testing LS3 Intakes INSIDE!! LS3 vs Ported vs FAST
After swapping intakes for the last 3 days we finally have some data for you guys. These tests were run 2 different ways, once with a maf in place & the test I'm posting which was speed density. The speed density showed power gains that the 85mm MAF was holding back. As a result I'm only posting the Speed density results. If your getting a upgraded intake you really should consider a 100mm maf or speed density tune to see decent power gains.
Here's a few pics of the intake testing:
Results:
Differences:
We're currently offering the FAST LS3 intakes for under $800 shipped to your door. The LS3 intake porting is right about $300.
For the vette guys these results should be pretty close to what they'll see. Using the speed density best simulates the large MAF the LS3 cars ship with!!!
Engine was a stock head LS3 with TSP 233/240 112+2 camshaft.
http://www.texas-speed.com/shop/item...=1062&catid=20
Here's a few pics of the intake testing:
Results:
Differences:
We're currently offering the FAST LS3 intakes for under $800 shipped to your door. The LS3 intake porting is right about $300.
For the vette guys these results should be pretty close to what they'll see. Using the speed density best simulates the large MAF the LS3 cars ship with!!!
Engine was a stock head LS3 with TSP 233/240 112+2 camshaft.
http://www.texas-speed.com/shop/item...=1062&catid=20
Last edited by Jason 98 TA; Sep 25, 2009 at 07:05 PM.
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From: Florida
My conclusion from the chart: save $800 on the FAST and spend it elsewhere ($300 to port the LS3, $200 to port the TB, and the rest on a SD tune or a 100MAF).
The big missing data point, however, is how a ported FAST would have performed. I have a FAST 90/90, and buying this piece without doing 5 hours of cleaup with a Dremel would have been a waste of $700.
Also, how much power was the stock MAF costing on each intake?
Anyway, thanks for the nice comparo test.
The big missing data point, however, is how a ported FAST would have performed. I have a FAST 90/90, and buying this piece without doing 5 hours of cleaup with a Dremel would have been a waste of $700.
Also, how much power was the stock MAF costing on each intake?
Anyway, thanks for the nice comparo test.
Drifting
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Looks like at about 5000-5500 rpm the ported intake and FAST start to leave behind the stock intake. I can't make out the second graph and what it is saying.
I take it the ported intake was not the stage 2 from Formato?
Thanks for posting this information!
Also, did you learn anything about different types of cams that the LS3 likes/dislikes?
I take it the ported intake was not the stage 2 from Formato?
Thanks for posting this information!
Also, did you learn anything about different types of cams that the LS3 likes/dislikes?
Last edited by AirBusPilot; Sep 26, 2009 at 01:08 AM.
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Pretty decent mid range gain, but for a cammed car I was hoping to see more gain. The ported LS3 hangs pretty close on the top end.
Nice price.
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The second graph shows the gains from the stock unported LS3 intake which is the horizontal blue line running at zero. For example, At 4000 rpm the FAST (greenish lines) makes 12.5 HP (16.6 TQ) more than stock. at 4000 rpm, the ported LS3 (red lines) made about 5 Hp (7 Tq) more than the stock LS3 manifold. The graph would be easier to read if it was just HP lines, and not HP and TQ.
Pretty decent mid range gain, but for a cammed car I was hoping to see more gain. The ported LS3 hangs pretty close on the top end.
Nice price.
Pretty decent mid range gain, but for a cammed car I was hoping to see more gain. The ported LS3 hangs pretty close on the top end.
Nice price.
I'll just concider it good research....Now how to convince my wife I need some money for an intake????
Last edited by SweetS10v8; Sep 30, 2009 at 11:43 AM.
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From: Texas Speed TX
I haven't seen the price on the adapter for the injectors. Let me check on it. Yes it's the same intake. We have WAY to many of them in stock!!
We tried a ported one Fasterproms did for us & it made less power than the stock one. They'll do some testing & we'll try again down the road.
We tried a ported one Fasterproms did for us & it made less power than the stock one. They'll do some testing & we'll try again down the road.
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