AMS 750xp vs. Stock frame options?

[mac11wildcat]

in theory the AGP should scroll faster because of the manifold design. it would restrict top end but spool faster, right? i was under the impression the AGP t3 5858bb was twin scroll.

[jyamona]

Originally Posted by mac11wildcat

in theory the AGP should scroll faster because of the manifold design. it would restrict top end but spool faster, right?

I don't think so, no. Their runners have a very sharp and abrupt 90* turn into the turbine housing, where as the ETS manifold uses smooth bends to shoot the exhaust gas straight into the turbine housing. There's a lot more to it than just a short runner design, like AGP focused on. Longer runners can spool faster if designed properly! They are both twinscroll, yes, but the ETS design is better.

Also, the ETS manifold can be made with a 1.25" runner option for even faster spool than their typical 1.50". 1.25" runners are good for 6-650whp, so more than enough for the 5858

[KickAss]

I would vote for a well tuned EF2 or EF2.5 or EF3 setup depending on spool vs power requirement in your build. With the 750 Kit, a downpipe isn't the only thing that needs to change. If you have an intake or UICP, those will need changing too.

For a stock block, I think the 750 will be under-utilized, even more so than an EF3, especially on E85. An EF2/2.5 tuned to its full potential by a good tuner is the way to go to keep cost and reliability in check and the power delivery enjoyable for a DD IMHO.

[mac11wildcat]

...again

[darkknight-x]

What about the 750xp or maybe 900xp with 6266 compare to ets twin scroll kit (gtx86 or hta35r)? Kind curious which one spool faster.

[Snakes709]

ok im a newb still when it comes to different types of turbo. What is the actual specs on the 750xp turbo. Is it single or twin scroll. Is it a 5858?

[darkknight-x]

I believe the new ams 750xp is till 5858 from the pervious 750x single scroll v band manifold, but it can be custom make like Hollywood(instead of 5858 he went with 6262 for his 750x kit).

[Snakes709]

So the new version is single scroll? I didnt know you can select different options (besides the .62 vs .82 trim) or whatever the options are on their site. I'm 100% going with a 2.4 stroker/bore this summer. And im set on the 750xp kit. Will be ordering that in May. I want 600hp and full spool by 4000rpm. But if theres different options i can go with to get quicker spool, i want to know what i gotta do..lol.

[darkknight-x]

It has been single v band precision turbos for the ams turbo kit.

[jyamona]

Snakes, the only options with the 750xp kit are turbine housing AR, either .64 or .82. Both housings are v-band, so inherently they are single scroll. The AMS kit has always been this way.