Opinion on 2.9 whipple

esonu

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It made good power but you are not using that blower for what its meant for. I am also betting at 18-19lbs your car doesn't hit hard as well. The gen 4 and gen 5 whipples, if you are going to be running low boost, they will not perform any better than the lower generations. The gen 4 and 5, the only way you are going to see any difference is if you run big boost. I spoke to a few guys that ran the first batch for whipple. crusher inlet 2.9's gen 4 and 5 you need to throw boost at them. 18 lbs, its like running a 88MM turbo on 15 lbs. I understand you have room to grow but if you are never going to run more boost, your car will not run how it should. 18lbs I would have bought a vmp. Hands down. Have that crazy low end and still make good power. Just my thoughts. Its your car.

I bought the 2.9 bc I knew it was going to be ran on race gas or e85. Nothing less than 22lbs.

I have the standard inlet 2.9. It doesn’t hit too hard in the lower end and I can tell but it is as smooth as can be to me lol. As for right now I am planning on keeping it at this power level until I am confident with the power. But once I am I do plan to go for more boost maybe 22lbs as I know these blowers do like a lot of boost. As far as 2.9s go I am satisfied with my gen 4.
 

94slowbra1

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Gen4 2.9 crusher here at 24lbs, monster! No numbers but leaps further than my 2.3 tvs on 23lbs. I'm one of those "go big or go home" or "do it right the first time" type of guys. I'd hate to do a gen 4 standard inlet and wish I would have done more. Buy the biggest you can afford especially if you are going to do corn.
Mine hits hard and pulls further than I'm willing to rev right now. I'm sure its pushing my factory long block but damn its fun
 

Stage 4.6

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Gen4 2.9 crusher here at 24lbs, monster! No numbers but leaps further than my 2.3 tvs on 23lbs. I'm one of those "go big or go home" or "do it right the first time" type of guys. I'd hate to do a gen 4 standard inlet and wish I would have done more. Buy the biggest you can afford especially if you are going to do corn.
Mine hits hard and pulls further than I'm willing to rev right now. I'm sure its pushing my factory long block but damn its fun

I here great things about the GEN 4 & 5 crusher blowers, but again the blower in question is the GEN 3 crusher, will it be just as effective and is it a better buy compared to the GEN 4 standard inlet? These are the 2 blowers i am comparing due to the price they are both going for, And yes i will be on E85.

Really appreciate everyone input on this topic.
 

94slowbra1

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Gen4 is 20 hp more than gen3 in the same configuration on the same set up. This is straight from whipple. Gen4s on high boost are all in the 800+ range which makes the 3s in the high 700 to 800 range. So yes I think the gen3 is very capable.
 

c6zhombre

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I here great things about the GEN 4 & 5 crusher blowers, but again the blower in question is the GEN 3 crusher, will it be just as effective and is it a better buy compared to the GEN 4 standard inlet? These are the 2 blowers i am comparing due to the price they are both going for, And yes i will be on E85.

Really appreciate everyone input on this topic.

I think, unfortunately.....there's just no real world data between a gen3 crusher vs gen4 std. Anyone that had a gen3 and stepped up to a gen4.....the crusher option was automatic no brainer.

Since you're going E85 and lots of boost.....I'd probably lean towards the gen3 crusher. But that's a total guess.

Honestly, I'd probably pass on your 2 choices today.....keep your current blower......save up some more cabbage.....wait for another gen4 crusher deal of deals to come across. Could happen any day now with the markets crashing.
 

stangfreak

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the 2.9 will HIT hard at its desired boost levels. At lower boost levels, it will be a bit soft. some people forget what the hit feels like with a proper setup. some people mind, some don't. It depends on the person.

One person who did notice the loss in low end was malcolmv8 if I remember correctly. everybody knows him and he is amazing with these cars. His 2.9 was also at high boost but his tvs at high boost hit harder down low. For me, my 2.9 at 22lbs hits hard.

I did drive a cobra with a 2.9 at 18lbs pump gas and it still had the instant hit but it wasn't anything to brag about. It was fast but you can tell it was still missing something. This is just advice and talk. Its not set in stone.
As long as you are happy, thats what matters.

I decided I am going to keep my car. eventually, I will get the gen 5 3.0 whipple and it will be ran at 25lbs. Nothing less than 25.
 

stangfreak

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Also the cars that are going fast with these blowers aren't running low boost. The ones cracking crazy numbers are running 28lbs of boost lol e85. That is something to consider. Gotta read between the fine lines. This is what one of the guys told me who was testing these blowers

"The 5 will be more efficient. Less heat, more boost pulley for pulley, less parasitic on the crank in order to drive the supercharger. But in the end... if people don’t really spin them hard, they aren’t going to see the maximum potential of the blower. Not telling you to go either way. Just pointing out, something to consider."
 

4sdvenom

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Traction is another thing to consider when worrying about how hard it hits down low. I’m sure what some consider hitting soft more than likely still blows the tires off in 1st, 2nd and into third from a dig. From a 40 roll is another question.
Between the 2 blowers you are comparing, I would go with the Gen 3 Crusher personally. Getting the air in is detrimental to making these blowers work efficiently.
E85 and boost! That's where the power is!
I will personally be going with the Gen5 3.0. I like that it only comes with a Crusher inlet as well.

Ken
 
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94slowbra1

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From a 40 mph roll with my gen4 crusher my tires stand no chance. Anything under 60 is tough to grip unless the rpms are low. I'd personally go with a crusher over a newer gen.
 

Stage 4.6

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Awesome feedback by everyone. I am getting the fuel system done this week, will re-dyno with my current set up next week and determine how i like it. Ill make my decision afterwards on which blower to go with.
 

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