General Supercharger Thread

Could the amount of boost play a role with that? I remember we’ve talked about this a while ago. But did we ever find a reason why that was? I lose sleep at night thinking my long tubes were a waste of money lol

 

I think you could compare my setup to Nobodyintexas as his is the same setup but without the longtubes and JBAs. My setup made 30-40 rwhp more, if I remember correctly. My times will not be as good on the Dragy though as I am lifted 6" with 35s and my truck is a DCLB so it is likely heavier. Of course, it is hard to compare from one dyno to another, as said before.

 

After looking at the Dyno run, and remembering I have 22in wheels on this truck, 510 to the wheels isn't bad at all on a roller Dyno.

 

I think that is pretty good. That is around 600-625-ish at the crank. Not too bad, imo.

 

yup

I was 477/518 to the wheels on a Mustang Dyno.

 

What's your set up?

 

harrop
80mm griptec pulley
DW 650's
Trd exhaust
D3 Performance did the tune
all else stock

 

On a hot as balls Texas summer day as I recall!

 

Plus your set up is lowered, with generally wider tires and has the front valence. You probably are getting some real world benefits that some of the other trucks aren't.

The Fireman build is the only one, besided Viktor, pushing higher numbers and the Fireman is running E85.

 

Any reason you went with the Griptec pulley over the Harrop one?

 

Mine's a Harrop Griptec

 

I bought this direct from Harrop and it doesn’t say Griptec…

 

Interesting..

My truck's still at the shop otherwise I'd check the 80mm I have too that came with the PS parts.. maybe it doesn't say Griptec like yours

 

I'm going to have some that disagree with me, but I absolutely think long tubes are a good idea on a supercharged application. As previously said, more air in, more air out. Back pressure is not really a good thing, and long tubes help reduce it. You're going to see less boost because boost is indicative of the amount of restriction. Less boost for the same amount of power is a great thing because you're not stressing the system as much as you would with stock manifolds and more boost. That being said, I'm still running stockers But hey, Kooks, ARH, stainless works aren't cheap and the tundra's piggy bank hasn't been accruing as much as it should lately.

 

You’re wrong not with these engines. You don’t get the same power with less boost, LTH will drop your boost which drops your power. If you install LTH then you have to do something ie.. pulleys, air intake, fuel system etc… to get your boost back in order to get your power back. Basically do those same mods with the stock exhaust system and you will increase power, do them with long tube headers and a full race exhaust system and you’ll get the same power back that you originally had before installing the headers. You can easily push this engine to its limits with the stock exhaust.

 

it was the only one Harrop had in stock at the time

 

Technically- it was Africa hot.

 

Do you remember how much your boost pressure dropped when y’all discovered this?

 

I don’t see what makes the tundra engine different than any other. David from Prospeed and Shrek from DAP both say you gain with QUALITY long tube headers, assuming you have the proper exhaust down stream and the exhaust timing is tuned properly afterwards. Boost doesn’t make power, flow makes power. Resistance to flow is boost. More power on less boost is always going to be a better scenario. On a truck with low quality LTHs, the wrong exhaust after the headers, and not tuned by someone who knows what changes to make to the tune to take advantage I could see how it wouldn’t gain or possibly lose power. All that said, I still don’t plan on getting long tubes. Not worth the expense and hassle for 40hp IMO.

 

I have had the LTH and exhaust since before i had the blower. With the 80mm pulley my truck makes 7-8 psi. I have the AEM gauge that doesn't show the measurement to the right of the decimal. Compare that to NobodyinTexas that has the same setup with stock exhaust. Well, except his boost gauge is on his workbench.....maybe someone else can give us a comparable boost number with the same setup and stock exhaust?

Unless someone has a verified measurement of the level of power made before and after LTH and 3 inch exhaust, on a supercharged 5.7, with no other changes AND on the same dyno, then I think they add to the power level. Keith has measurements that the LTH and exhaust add 50rwhp and 80 tq on an NA 5.7. Why would the less restrictive exhaust cause power to decline, unless there is something in the tune? Air in and air out. The tune on these trucks can make a big difference.

 

I have the same setup as @nobodyintexas, and the same boost gauge as you. I see the same boost levels on the 80mm pulley and stock exhaust as you do with LTH (peaks at 8ish). What headers do you have? That could be indicative of how well your whole exhaust is flowing. If you have good LTH, higher flowing midpipes, and a good flowing catback after it all with a good tune I would think your boost pressure would drop 1-2psi compared to my setup.

 

y'all are making me want to get busy with my boost gauge.

at this point - I'm just going to take it to Prospeed in North Houston & have them do it.

 

I have the JBA LTH and 3 inch exhaust that I got from Keith at DD.

 

I can Jive with LTH causing less boost, but you would have higher power on that less boost.

or that's what we deduced many pages ago.

Holdener had a vid on this as well.

 

You’ll gain with long tubes I’ve ran kooks and stainless works on previous blown applications. But the gain vs cost and install pain on supercharged cobras was a nightmare lol. Zero room to do it. But it did gain and sound awesome.

 

Well i have a set of Stainless works headers that i picked up on black Friday for 400 bucks off that i will be installing in a couple weeks then hopefully tuning with OTT so i'll try and give feedback on if i lose a pound or two of boost. I'll be honest i wouldn't have bought long tubes but my drivers side cat failed and my parts guy says there isn't a single one in the country. From all these tundras we have had come in with the cats stolen they generally sit on the lot for 3-4 months and i just couldn't wait that long.

 

I did Doug Throly LTH on my s/c Tacoma and it made a seat of the pants difference. But it was a huge PIA to install. I had to get a friend to help maneuver them into place

 

I'm a little spoiled. I can choose from 35 different lifts to help aid the install

 

I think @Downytide has LTH but he got them all done with his Stage 2.

 

Stage 2 is in progress, still on stock pulley for now, bought URD one but decide screw it, gonna go with the 2.2/2.1 that snivalous designed.

I have Stainless Works, if you need feedback, let me know, but you will need probably 2 full days at good pace to finish it, or else it just become a chore, just keep in mind even if you had the catted version from SW, they will trigger CEL, so make sure ask OTT to adjust that, I also have OTT's tune on the truck right now.

Get ready to set off car alarms from hundred yards away on cold start!