DT shorty headers

Hello i was wondering if the dt shorty headers were any good on a 5.7 tundra. I have an 2008 tundra and looking for some decent headers. I know long tubes are the best but shorties would be easier in terms of not mesing with mid pipes. I guess it gains 29hp and 46lb torque at at 3300.

 

Interesting that the gain is only at that short RPM range and it dies off immediately after to almost match stock.

 

Yea only for low to mid range power. Top end is probably the same but how much are you at 5000rpm on your daily driver..

 

Bring up the torque/horse power curves at the lower RPM's is a very good thing, makes it great for crawling around in 4X4 or towing, it's always nice to have a flattened torque/hp curve, it makes for less shifting.

 

Yea seems like the way to go if you have emissions testing or a warranty. I think these will have good power from 0-3500rpm and the rest would be stock but their shorty headers i think doug thorley LT makes 6hp more but its through out the whole rpm band not just low to mid power like the shorties.

 

Here is the dyno graph doug thorley LT seems like it lose torque at 2000rpms. And only gains 14lb more torque at 3200rpm and same hp 185hp at 3200rpm but peak hp LT takes ahead but the LT were tested with a flow through muffler and the shorties didnt.

 

Did anyone put dt shorties if so how was the gain..

 

Those sure look good. How do they sound?

 

I dont know but i heard from some members they have good low end torque from 0-3500rpm and the sound is alittle deeper. And throttle response is definitely improve. I dont have them on but i might buy them. And they look like a good improvement.

 

Your truck already has short tube headers on them not exhaust manifolds Toyota puts them on the 5.7 from the factory. Not any real gain to go to an aftermarket over the OEMs long tube yes, short tube no. Keith @dirtydeeds feel free to chime in.

 

Yes you are correct they are semi tri-y headers 4-2-1 header. They are better than some manifolds but not the best they say they are stainless steal but they are really not mine is rusted. Long tubes are good. Usually long tubes gain upper rpms but if you go 3in dual with x pipe. You gain tons of low rpm torque but i already have a catback and its dump after axle. If you look at doug thorley dyno they lose torque at 2100rpm and so as afe headers same thing you lose torque at low rpm and i dont go above 3000rpm really never its my daily driver so the short tube tri-y header in the dyno gives good power from 2500-3500rpms. The proof is in the pudding.. Many people say shorty headers wont gain anything but many years ago like in 2008 trd sparks were putting these dt shorties in our truck. Many people say these headers are definitely an improvement over stock 1/58 primaries 14 gauge mild steal with ceramic coating they are 771 at LMP. If they were like 450 maybe it might be worth it..

 

Opinions vary, including some of the folks at Sparks actually in the know.

 

These trucks have short tube headers / exhaust manifolds installed at the factory, their performance is improved by replacing the factory muffler with a well designed cat-back using the factory single tail pipe.

You want to use dual exhaust all the way out if you install Long Tube headers.

 

Yea thats sound like keith. But our manfolds are so restricted compare to our heads. They flow so good and wonder why when you put headers on these trucks they gain so much power look at the dyno and dont say we already have headers because believe when you put on headers on these trucks its night and day difference these headers were hot back in 2008 and really dies because alot of people went to long tube but the difference in the dyno at low to mid range is kinda the same but of cours top end is increase alot. When keith did his dyno on jba im pretty sure he used 3in dual with x pipe. And gain 49hp and 89lb torque now that is true but i dont think thats peak thats somewhere in the powerband maybe at around 3800rpm. The peak torque went up a couple rpm because jba uses 4-1 desgin which is good for high rpms and the 4-2-1 is good for low to mid range. Thats why toyota uesd the 4-2-1 header desgin for towing or crawling in 4x4. And another thing while scavenging is essentially headers 101 for the aftermarket, Toyota didn’t rise to the occasion when producing their stock units due to the fact that their tri-y design doesn’t actually offer a true division between each tube. As a result, there are runners which are simply dumped into the first available tube for each header. And the lack of a smooth transition between primaries and the merge collector in the stock headers also fight against adequate scavenging. So the dyno for doug thorley surely proves that these headers are proven. Im just looking for anyone that has install them and think they are worth it.

 

Yea arh is definitely high quality probably the best longtubes headers for our trucks.

 

Do it and get your truck dynode, before and after let us see the results.

 

ARH might have similar power numbers to JBA but ARH is Superior and the quality you cant beat. But i know ARH has two options.
1 3/4 and 1 7/8 which for that one is for supercharged tundras.

 

For supercharged trucks I recommend the stock manifolds. There is no power gains with headers and a supercharged truck.

If not installing long tubes keep your stock manifolds and simply replace the muffler with a well designed system. The muffler is the restriction.

If you have the gusto to install a set of long tube headers JBA is the original long tubes for our trucks. And for stainless steel ceramic coated headers, there is no better value.

It’s all about the wavelength and it’s tuning. Not about making the pipe diameter bigger. Go bigger without going longer you just lose low end torque.

Shorties start making power at about 9k rpm. Long tubes well before 6000 rpm. When I did all that dyno testing back in 2013 and 2014 I found thst jba long tubes power band mirrored stock, only more.

 

Whats jba 14 gauge or 18 gauge?? When installing long tube seems like its going through the floor board its more noisy.. Thats why arh might be the way to go..

 

Jba is 14ga. Only manufacturer that goes thinner is pacesetter.

 

JBA 14 gauge not bad. If i was on a budget i would buy JBA ceramic no doubt.

 

Even not on a budget. Why throw away money??

 

Well compare to arh which is crazy expensive. People think ARH is better quality but at the end JBA is cheaper same power gains and quality is right on with JBA with ceramic.

 

I run JBA shorties on my 2002 4.7, the rest of the exhaust is stock. The engine is more responsive. If you install a set of JBA shorties on your 5.7L, make sure the rest of the exhaust remains stock.

 

You think these shorty headers would be ok using the bullydog tune set at regular tune would you think the afr would be to high. I know longtube it would be thats why you have to use trail tune but these are shorties what do you guys think.

 

Ok i just bought dt shorties headers ill let you know how she does. I will post a video in a couple weeks.