2018 1.4 manual build thread
- Thread starter Nataphen
- Start date
zomby woof
Member
Is that a bigger TB? Do you think there will be any difference (other than tuning and drivability issues), assuming you're still making boost pressure?
If nothing else, I think it will increase throttle response and allow me to make the same power at lower boost pressure. I believe the turbo is at the upper end of its safe RPM range making 26psi now, so I don’t know if lost boost from the larger TB can safely be cranked back up.
The most beneficial use of this TB would be in combination with a big turbo where bringing boost back up wouldn’t be a worry, but I wouldn’t mind lowering boost pressure while maintaining equal power on my GTX. It’s all going to be a learning experience.
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zomby woof
Member
The stock TB isn't your restriction, it's the cams and to a lesser degree the head.
It’s been shown to make power on a big turbo car with stock head and cams. I’ll see how it goes. SW is making cams now and there are some folks out there doing head porting. That may be something else for me to look into soon.
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YouBeTailsIllBeSonic
Member
You should just do cams in yours and let us know how you make out.
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zomby woof
Member
Not going to happen right away. The Sonic we have now is my Wife's daily driver, though I am currently looking for one and it would be the first mod that I do to any turbo car if I was looking for serious performance.
I'm retired from cam grinding though I will still do the odd one, but the Sonic application is a little difficult. Just a word of warning, I think I read that somebody is offering cams, so if that's the case, as a lot of questions before you buy because if they're not done right you will have valvetrain problems, broken springs, rockers and likely bent valves, just like some of the earlier Eco motors did
The TB adapter works great! I had to trim an edge and enlarge some holes on the TB to bolt it up, but it was straightforward. I’m trying to figure out the coolant neck right now because the larger TB will not clear the hose in the back. I have a couple of options to work with, but the GM part is on back order and Racer X hasn’t released their outlet just yet. Things are on hold yet again. :/
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YouBeTailsIllBeSonic
Member
Beeauuuuuty!
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You did an excellent job on this, and I’m glad you contacted me and offered to help. This is a much better solution than what I was capable of on my own.
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YouBeTailsIllBeSonic
Member
Beware of bamboozlers.
Is this just an efilive limitation? we're running 80's on e90 and holding 57psi at the rail in the auto sedan that made 250... and the LTZ had no issue launching at 7 at the track.
Looks like i need to get the adapter and tb that have been on my bench for a month actually put on a car lol
"isn't moving forward"
right...
This guy is robbing people in the ecotec/delta community, and apparently there's a history in the j-body world as well. It's just one story after another of lies and deceit, and now he's preying on the 1.4 guys who don't know who he is yet.
https://www.facebook.com/armcclure/...40709737688¬if_t=feedback_reaction_generic
No progress on the LNF TB yet, but I finally got my tune with tables for increased fuel pressure. The car feels like it picked up significant power, and it’s flowing about 2-3lb/min more through the MAF now. Waiting on Racer X to come out with their water outlet to fit the LNF.
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