Thinking about a dyno run pre/post DT headers

[RobRed]

I've heard all kinds of stories about the massive performance gain the DT headers give. Frankly I'm not sure how plausible some are.

Here in the Bay Area I have a shop that works on my Audi with a 4 wheel drive dyno so I'm contemplating a before and after. The issue is that I really dont want to spend $200 on this.

So I thought I would throw it out to the "team"... care to chip in for this endeavor? 10 guys at 20 or 20 guys at 10 bucks???

If we do this it will be done on [STRIKE]Aug 31st[/STRIKE] Sep 1st and the follow up pulls a week later (after install)

Base car is a stock (even tires) 2000 Land Cruiser with 145k miles. We will get 3 runs before and 3 runs after. Every pull will log Horsepower, Torque, and Air/Fuel ratios. Additional inputs can be requested if you guys can think of any.

Your thoughts?


------------------------------------


Each Spot Represents $10 Contributed:

1. RobRed
2. RobRed
3. RobRed
4. RobRed
5. Nakman
6. Nakman
7. Plirky
8. SR.GRINGO
9. OregonLC
10. Romer
11. Lexi4Darin
12. Copenhagen1
13. SMM3
14. db2nsoaz
15. Supra88
16. Uzj100
17. Skolfoppa
18. CappyKD
19.
20.

 

[CappyKD]

I'd chip in $10.

 

[OregonLC]

I'm in for $10 also.

 

[nakman]

Cool idea. I'm good for $10.

 

[RobRed]

Thanks fellas. I'll of course be putting up $$$. Let's see who else is curious???

 

[2000UZJ]

I'm down for 10.

 

[SR.GRINGO]

I'm in for $10.

 

[smm3]

I would be in for 10 as well

 

[lexi4darin]

If we get enough guys donating, we can also baseline an LX470 on the same day. I'm in for $10 to either your truck, mine, or both. Depending on the amount of response we get here.

 

[OregonLC]

If we get enough guys donating, we can also baseline an LX470 on the same day. I'm in for $10 to either your truck, mine, or both. Depending on the amount of response we get here.

Everything below the wood trim is the same...

 

[lexi4darin]

It's a data issue not a different vehicle issue. And outside the wood trim there's plenty different just nothing in the drivetrain.

 

[Manhattan]

You could short cut this - may not need to dyno the 100... Ask DT to donate $10. If they're in, you know the gains will be significant. If they don't...

 

[OregonLC]

It's a data issue not a different vehicle issue. And outside the wood trim there's plenty different just nothing in the drivetrain.

Just giving you a hard time. But you're right, the grill is different too.

Honestly, I don't see the purpose of doing a LX. If the goal is to have two vehicles for a 2nd data point then there could be some value. We already have the chart from a Tundra so if Rob's LC confirms those results then I'd say we have solid data.

BTW, what's an FJ100? (your sig).

 

[2000UZJ]

BTW, what's an FJ100? (your sig).

"FJ100"= From Japan 100. It's legit

 

[nakman]

You could short cut this - may not need to dyno the 100... Ask DT to donate $10. If they're in, you know the gains will be significant. If they don't...

Performance gains are a secondary benefit here. The real benefit is replacing a cracked or soon-to-be-cracked manifold, and upgrading to a better design that won't crack. I'm not holding my breath for any huge performance increase, though suspect I'll notice some from the seat of the wallet factor.

Oregon- we all got FJ100's, just look inside the door of your jack compartment.

 

[RobRed]

This is about putting to rest the numbers we have seen on tundras and Tacoma and 100's with disconnected drivelines. The folks that contribute to this effort will be helping the land cruiser 100 community with obtaining solid information. No doubt for many the DT headers are a maintenance replacement but I think everyone here expects some additional performance. That may come in the form of drivability or outright power. It could be worse

Those who have committed to this project I will contact you via pm. If I could get 10 or more ppl (and that seems likely) I will cover the balance. There will be 3 before runs and 3 after runs. I will try to make sure conditions are as close as possible between before and after runs to minimize correction factors. The first set of runs should take place next week. I'm planning to swap in headers over the long weekend.

 

[Romer]

I just talked to Nick and got the last set and I am in for $10.

 

[jgray]

I'm very interested to see these results.

 

[plirky]

ok, I'm in for $10 also.

 

[lexi4darin]

Just giving you a hard time. But you're right, the grill is different too.

Honestly, I don't see the purpose of doing a LX. If the goal is to have two vehicles for a 2nd data point then there could be some value. We already have the chart from a Tundra so if Rob's LC confirms those results then I'd say we have solid data.

BTW, what's an FJ100? (your sig).

Oh, I knew you were giving me a hard time. That's why I was sparring back with ya. But wait, the grill is different?

The original 4.7 Tundie that was tested had a cat back system and we don't know about the manner in which the test was run, meaning what controls were used. Also, I'll let you judge the results for yourself: +14% gain in torque (~39lb/ft) & an 11% hp gain (~28hp).

It's all but a sure thing that a new single test result doesn't confirm the Tundie chart. So the thing Red and I have talked about is the second data point to completely dispel any ambiguity.

But let's just focus on getting as many Mudders to contribute here to this test and we'll go from there if there's any extra.