143 replies to this topic

[Bradrock]

So that's a twin scroll setup? Did you get the JDL divided header? Wastegate plumbed back into exhaust?
Sounds like a pretty hot setup! I want to hear your BUTT dyno impressions! Twin scroll help quick spool up with larger turbo?
I have zero experience..But I DID buy a book!

[fuel]

Maybe MPI will be the next upgrade to support the increased flow of the turbo?

[Mach 5]

Its a single scroll T3 housing.. OH HELLZ YEAH on the vidz! I will post up as soon as its ran. getting anxious!

-Jarek

[Mach 5]

I actually just sold all the MPI stuff I found tbi more intriguing. wanted to give it my best

-Jarek

[Mach 5]

No dyno videos yet but more to come

340hp 380tq @ 16psi

Tuning at Vinny Ten Racing today.. Ran out of fuel... Secondary injector too small for 22psi.. 1450cc... we made over 400hp before 4k rpm on high boost but due to lack of fueling they had to back out. Ordering an injector this weekend!!

https://www.youtube....h?v=a0dBWwQ94GA

-Jarek

Edited by Mach 5, 28 October 2016 - 10:14 PM.

[Bradrock]

Can you tell me what year the Caravan intake is?

I hope you get some driving time in before going crazy on the dyno ! 400hp on tbi.....WOW!

Thanks,  Brad

[TexasQuest]

Very impressive!

[Mach 5]

1986. also found on k cars

Thank You!! More to Come!!!

[mbruneaux]

Mach 5, on 30 October 2016 - 11:41 AM, said:

1986. also found on k cars

Thank You!! More to Come!!!

What makes it better or different? Does all the Starquest hardware bolt on?

Edited by mbruneaux, 30 October 2016 - 04:52 PM.

[Mach 5]

so far. still testing. but it has all 4 runners drawing directly from plenum and basically equal length. I have pictured in previous posts on how I went about modding to fit. gained 45hp just swapping the intake out with this vs stock at same boost level. and now with new turbo have reduced pressure 5psi to make the same power with more response.

[fuel]

And imagine how much more you would gain going MPI!

[Mach 5]

It would be killer if MPI but I like TBI and its lil quirks..

I picked up  160lb secondary from Southbay Fuel Injectors and will be tuning next week!

-Jarek

[importwarrior]

nice cant wait to see the results.

[Funky Phil]

Thats awesome. I honestly enjoy the tbi builds.
But I usually run matched injectors with simultaneous injection.

[Mach 5]

originally I started out looking to make 270 to 300... then I kinda just went from their. We shall see what happens. I may have to upgrade the primary as well. I was told 160lb was the highest recommended to go on TBI by the owner of Southbay Fuel Injectors.... he said after that everything goes haywire... who knows..... time will tell.. Ive been driving it everyday and its been great. on my 3rd tank of gas already

[StarquestRescue]

950 + 1450 = 2400 cc  950 + 1680= 2630cc  That is only a 9.5% increase in fuel flow. 350 HP + 9.5% = 383 hp. And you are going to pay $200-$300 for a retune? This  is a good way to go broke.

  Are this low impedance  or high? How many squirts per cycle are you running? Are you willing to share the tune and dyno or street pull data logs via email? What is the idle pulse width running the 950 primary ?

I see you say the primary is a 850, a 950 is listed at the beginning of this thread.

Edited by StarquestRescue, 04 November 2016 - 06:26 PM.

[StarquestRescue]

Funky Phil, on 04 November 2016 - 10:35 AM, said:

Thats awesome. I honestly enjoy the tbi builds.
But I usually run matched injectors with simultaneous injection.

What is the biggest pair you have tuned? How many squirts per cycle? What was the idle pulse width?

[Funky Phil]

1200's I think. Pretty sure it was 2 squirts and I honestly cant remember pulse width. Ive done three setups that way

Edited by Funky Phil, 04 November 2016 - 08:48 PM.

[Mach 5]

We still had more room to go with the current injector setup. but wasn't enough to run 22-23psi. He said we can tune 18-19 safely but I didn't want to push it. It should be enough for that if not I will upgrade the primary.. I did modify the fuel rail for a larger 6an fitting compared to what was there it should definitely help if that was an issue.

as far as paying for re-tune.. they have charged me but its not a lot. mainly pay up front. Im not complaining. Vinny Ten has been working closely with me to make the most out of it. I will be going back this Thursday. so far plug and chamber readings with my boroscope show good results from the tune...

-Jarek

[Mach 5]

finally hung the nose on this thing... the support was rotted and smashed so I had to cut the brackets off. what wasn't rusted and weld on tabs.. ITs a good 20 footer right now.. Ill straighten it better later.