Which is the best Starlet intake manifold? | Toyota Starlet EP91 quick tech. 

Great question, There are larger throttle bodies that are available: the 4efte is 50mm but has the "wrong" tps and no IACV for the 4efe Starlet ECU to recognize. You can get an adapter to use a variable % tps on it but the IACV will need deleting and cause an extra challenge. The 4efe and corolla manifolds are only a 46mm inlet and will require machining to open them out to 51mm (the 'rolla manifold also needs the flange welding onto the plenum from outside otherwise it will just fall off when bored out!). Apparently there are other TB's from 4AFE that should fit although I have never had one to play with. I think I'll stick with the stock TB and corolla mani setup for now, I also want to swap to fte manifold and stock TB and if necessary add the fte TB to see what changes. It may gain at top end but lose drivability at lower rpm.

The 95 corolla can have either the Starlet long runner, tight turn manifold or the early 95 models used a n/a version of the 4efte short fat runner manifold. If your throttle body has the IACV on the bottom (not a plastic one on the end of the manifold) then the corolla one should fit without any adapters necessary.

@@dan91sgarage awesome! Thank you so much for the information Dan! 🙏

It depends on your definition of stock NA build really. If you're just looking for extra power on an otherwise stock engine, then the corolla manifold is an excellent choice. No other mods necessary although a det 3+ is always going to help as you can then adjust timing/fuel but it won't be a huge amount of bhp gain from the det3 NA. The manifold just bolts on, no welding etc. If your building a full on race NA (head work, cams, lightened and balanced rotating assembly, high comp etc...) the manifold choice may differ if your going to rev it to eleventy thousand rpm lol.

if its a pre 1995 paseo you can use the 5efhe manifold (acis)

Yes! I would love an ACIS manifold to play with but they are so rare to find.

@@dan91sgarage do you reckon it would be good for na builds even without the acis loom?

@@anjewlobullcorn2430 If it was running on the long runners only, it would probably behave like the 4efe or corolla manifold. It's a rare manifold that would be better used on a build with high rpm and the switch over working properly. 👍

​@@dan91sgarageI have a few for sale

@@pr0n5tar Do you still have any? I would be interested if so!

Wow, thanks for the offer though, super generous.

I’ll take it! 😂

I’ll take it pls :)

It's a straight fit with the EP91 4efe throttle body. You will need new throttle body gasket and new gasket from manifold to head. You might also need 2 large washers to secure the throttle cable to the metal bracket if you didn't get the plastic adapter included with the manifold

@@dan91sgarage alright thanks lad

Don't know of any for sale at the moment. I got mine off eBay. A guy was selling a complete corolla engine and I asked if he'd just sell the manifold which is how I got mine.

@@dan91sgaragealright thanks

Sounds like a great engine! A 4age with torque or a 7afe that can rev. Not cheap though with the forged rods and pistons and it'll need some ITB's for maximum dorts! 😁

@@dan91sgarage no a 7age ha ha.. best of both worlds... I would use forged rods yet stock pistons (as they can handle a lot anyways) we shall see... itbs mmmmm

Yes. All you need is the corolla inlet manifold and some large washers to connect the throttle cable.

When I fitted a corolla manifold to mine it was the opposite. Increase in low down torque, mid range felt "normal" and it pulled cleaner from 4000 to 5000ish before tapering off to the redline. All done on the butt dyno, best I can describe. Would love to see back to back dyno figures from ep91 manifold to corolla manifold on the same car.

@@dan91sgarage i will see how it goes, because maybe takes some time for the ECU at the new condition! It's the first time though it reaches 6000 RPM with 4th gear. I hadn't tried it before although. Also I think it's feels smoother when changing gears. Next project is 421 exhaust header from corolla ee101 4efe.....

​@@giorgosgryll795 did u end up installing the 4-2-1 from the Corolla? Im curious about the gains on that

@@sapovinho yes!i did! I can say low down torque improved! Mid range is really good but at high revs after 140km/h it dies........

The main gain of these mods i think is the driveability and smoothness of the car. No more knocks when changing gears, torque feels quite steady.

Around 10hp max N/A. Never dyno'd my Starlet but it's the best "bang for buck" increase you can do for an N/A 4efe EP91. It bolts on easily and there is an improvement in low down torque and mine was less "breathless" at the top end as well. It is also excellent for NA+T builds below 150bhp.

@@ahmed-ex4wx You will need a lot more modifications than just the corolla intake manifold to reach 110bhp naturally aspirated. 👍

They come from the 8th generation Toyota corolla (bugeye 97-99) E111 model with 4efe engine. Third generation 4efe engine, also found in late model JDM EP91 Starlets

@@dan91sgarage Thank you so much my friend, I also want to install a turbo on Corolla II windy with 4EFE.

I haven't! That response was to another comment that has now been deleted by the guy who posted it. Trying to tune a 4efe for big N/A power is a waste of time and money, when they are so easy to turbo for more power. If you have gen 2 4efe engine then the corolla tubular manifold is the best bang for buck upgrade. "Big" power N/A tuning is pretty universal no matter what the engine really, ported head, stronger valve springs, uprated cams, standalone engine management to raise rev limit and control spark and fuel, stronger con rods maybe, corolla or 4efte inlet manifold depending on where you want the power, larger TB, maybe ITB's instead, custom 4-2-1 ex mani, custom exhaust, slightly larger injectors, adj. cam gear, lightened flywheel, CAI. This might get over 100bhp. then its increased displacement (5e) and high comp pistons. Or a cheap turbo kit build for around 140bhp on an unopened engine! 🤷‍♂

@@dan91sgaragewouldn't you need a standalone for the turbo build? (check profile pic for reason for asking)

@@StanleyKubick1 No. I used a Ecumaster Det 3+ piggyback with original Toyota ECU. It works great. Check the videos on my channel for the entire build in great detail. If I was going for a forged big hp build I would switch to standalone.

The problem with the fte manifold + 50mm TB setup is that the 4efe is a plodder not a screamer. It will lose low down power (where you drive the most) and gain a few bhp at redline (infrequent driving). If the redline could be to 7k rpm+ it might be worth it though. I feel the Corolla tubular manifold or 4efte manifold with 45mm TB provides a "fatter", more usable spread of power for the stock rpm limit. Each to their own. I might get a 4afe TB to compare them back to back on the dyno. Does the 4afe throttle body have the vacuum ports for the PAS idle up function?

Sleepyrz here been a while Those are the intake headers lol You need to add a pipe section to up the chamber volume and larger throttlebody of corolla it's a screamer

The problem is that the acis manifold is virtually impossible to find in the UK and very expensive. How much extra torque do you see over the corolla tubular manifold? Which Throttle body / TPS do you use? Do you have a link to any dyno plots of this combo? Seems like a waste of the short/long runner manifold if you only use the long runners on the low rpm 4e 🤔. It is supposed to provide the best of both worlds on a higher revving 5e.

@@dan91sgarage Something is killing messages with links. where to send links to charts and where to buy inexpensively?

@@romanroman7327 you can send links to my instagram if you want. I have turned them off on youtube as some people spam the comments with their own stuff.