Sponsored

New do88 intake manifold

Tsuki8

Well-Known Member
Joined
May 28, 2022
Threads
13
Messages
340
Reaction score
502
Location
TX
Car(s)
21 E50 WMI
Finally installed after so long sitting in box.
Still testing and comparing the data.
Currently impressed ?

(Not concrete comparable data)
(Discovered the cooling loop was not fully bled)
5sec pull
do88 (cheap) manifold:
Ambient: 84F
IAT: 96F -> 100F (4F delta)
IAT throttlebody: 134F -> ~280-290F (able to shed 190F of heat, maybe more on a longer run)

Stock manifold:
Ambient: 84F
IAT: 102F -> 111F (9F delta)
Was not logging the IAT throttlebody. (Assume similar since same mods/tune).
Tune is BM3 OTS Stage 2 Multimap (E50).

1747715771696-91.jpg

1747715806424-36.jpg
1747715820994-h6.jpg
 
Last edited:

ChrisIsIced

Well-Known Member
First Name
Christopher
Joined
Aug 23, 2024
Threads
0
Messages
57
Reaction score
52
Location
Connecticut
Car(s)
Toyota Supra
Finally installed after so long sitting in box.
Still testing and comparing the data.
Currently impressed ?

(Not concrete comparable data)
(Discovered the cooling loop was not fully bled)
5sec pull
do88 (cheap) manifold:
Ambient: 84F
IAT: 96F -> 100F (4F delta)
IAT throttlebody: 134F -> ~280-290F (able to shed 190F of heat, maybe more on a longer run)

Stock manifold:
Ambient: 84F
IAT: 102F - 111F (9F delta)
Was not logging the IAT throttlebody.

1747715771696-91.jpg

1747715806424-36.jpg
1747715820994-h6.jpg
How bad was the install? How many hours?
 

Tsuki8

Well-Known Member
Joined
May 28, 2022
Threads
13
Messages
340
Reaction score
502
Location
TX
Car(s)
21 E50 WMI
How bad was the install? How many hours?
do88 install instructions

It's alright, there's a couple of sections one can skip to make it easier.
Took maybe ~6hrs, I leisurely worked on it solo (3) 2hr sessions.
I mostly followed the Kies Motorsports vid (dont have to drain all the coolant).
I bought the extra fuel rail and evap delete caps, decided to keep the evap system for now.
(Separate for cheap version, included in MERA version)
The install guide does skip over some disassembly and reassembly.

I skipped the bracket spacer that is behind engine, legit hard and cannot see the bolts.
The manifold mounted fine without it.

I did relocate the evap canister and redid the lines, for a cleaner look.
I have a quickjack, so it was easy for me to get underneath for that section.
($20 fuel line & zip ties)

When removing the stock manifold, my coolant lines were stuck on solid.
It was easier to unbolt the bottom of the manifold (3bolts & separate), then disconnect the lines.

It took 3-4 bleeding procedures, I didnt prefill the lines/manifold per instructions.
Was cleaner to just fill and bleed at the reservoir.
Mainly to keep the lines clean to test for leaks.

Mount the TMAP sensor on the manifold before installing onto the engine.
The bolt cannot be reached once installed, the instructions skips over this I believe.
(Few members noted this)
The manifold-to-engine bolt (pictured) near it is also super hard to install.
It is very easy to lose the washers included, be careful there.

The headless screws used to position the phenolic spacer, were a pain to remove, use a magnet.

Bracket spacer:
1747755901051-wk.jpg


Bottom stock manifold part:
1747756462406-b0.jpg


Unbolt these bolts if you cannot unhook the coolant lines:
1747756542114-ub.jpg


TMAP sensor:
1747756710784-ve.jpg
 
Last edited:

req

Active Member
First Name
john
Joined
Nov 21, 2024
Threads
2
Messages
32
Reaction score
28
Location
seattle wa
Car(s)
2020 A90 Supra
do88 install instructions

It's alright, there's a couple of sections one can skip to make it easier.
Took maybe ~6hrs, I leisurely worked on it solo (3) 2hr sessions.
I mostly followed the Kies Motorsports vid (dont have to drain all the coolant).
I bought the extra fuel rail and evap delete caps, decided to keep the evap system for now.
(Separate for cheap version, included in MERA version)
The install guide does skip over some disassembly and reassembly.

I skipped the bracket spacer that is behind engine, legit hard and cannot see the bolts.
The manifold mounted fine without it.

I did relocate the evap canister and redid the lines, for a cleaner look.
I have a quickjack, so it was easy for me to get underneath for that section.
($20 fuel line & zip ties)

When removing the stock manifold, my coolant lines were stuck on solid.
It was easier to unbolt the bottom of the manifold (3bolts & separate), then disconnect the lines.

It took 3-4 bleeding procedures, I didnt prefill the lines/manifold per instructions.
Was cleaner to just fill and bleed at the reservoir.
Mainly to keep the lines clean to test for leaks.

Mount the TMAP sensor on the manifold before installing onto the engine.
The bolt cannot be reached once installed, the instructions skips over this I believe.
(Few members noted this)
The manifold-to-engine bolt (pictured) near it is also super hard to install.
It is very easy to lose the washers included, be careful there.

The headless screws used to position the phenolic spacer, were a pain to remove, use a magnet.

Bracket spacer:
1747755901051-wk.webp


Bottom stock manifold part:
1747756462406-b0.webp


Unbolt these bolts if you cannot unhook the coolant lines:
1747756542114-ub.jpg


TMAP sensor:
1747756710784-ve.jpg
do88 install instructions

It's alright, there's a couple of sections one can skip to make it easier.
Took maybe ~6hrs, I leisurely worked on it solo (3) 2hr sessions.
I mostly followed the Kies Motorsports vid (dont have to drain all the coolant).
I bought the extra fuel rail and evap delete caps, decided to keep the evap system for now.
(Separate for cheap version, included in MERA version)
The install guide does skip over some disassembly and reassembly.

I skipped the bracket spacer that is behind engine, legit hard and cannot see the bolts.
The manifold mounted fine without it.

I did relocate the evap canister and redid the lines, for a cleaner look.
I have a quickjack, so it was easy for me to get underneath for that section.
($20 fuel line & zip ties)

When removing the stock manifold, my coolant lines were stuck on solid.
It was easier to unbolt the bottom of the manifold (3bolts & separate), then disconnect the lines.

It took 3-4 bleeding procedures, I didnt prefill the lines/manifold per instructions.
Was cleaner to just fill and bleed at the reservoir.
Mainly to keep the lines clean to test for leaks.

Mount the TMAP sensor on the manifold before installing onto the engine.
The bolt cannot be reached once installed, the instructions skips over this I believe.
(Few members noted this)
The manifold-to-engine bolt (pictured) near it is also super hard to install.
It is very easy to lose the washers included, be careful there.

The headless screws used to position the phenolic spacer, were a pain to remove, use a magnet.

Bracket spacer:
1747755901051-wk.jpg


Bottom stock manifold part:
1747756462406-b0.jpg


Unbolt these bolts if you cannot unhook the coolant lines:
1747756542114-ub.jpg


TMAP sensor:
1747756710784-ve.jpg
IMG_9788.jpg
that bracket spacer was a pain from what i remember. same here with the bleeding procedure. i had to do it 3-4 times too. how did you relocate the evap canister? seemed like too much work for me to do so my mani looks messy.
 

ChrisIsIced

Well-Known Member
First Name
Christopher
Joined
Aug 23, 2024
Threads
0
Messages
57
Reaction score
52
Location
Connecticut
Car(s)
Toyota Supra
do88 install instructions

It's alright, there's a couple of sections one can skip to make it easier.
Took maybe ~6hrs, I leisurely worked on it solo (3) 2hr sessions.
I mostly followed the Kies Motorsports vid (dont have to drain all the coolant).
I bought the extra fuel rail and evap delete caps, decided to keep the evap system for now.
(Separate for cheap version, included in MERA version)
The install guide does skip over some disassembly and reassembly.

I skipped the bracket spacer that is behind engine, legit hard and cannot see the bolts.
The manifold mounted fine without it.

I did relocate the evap canister and redid the lines, for a cleaner look.
I have a quickjack, so it was easy for me to get underneath for that section.
($20 fuel line & zip ties)

When removing the stock manifold, my coolant lines were stuck on solid.
It was easier to unbolt the bottom of the manifold (3bolts & separate), then disconnect the lines.

It took 3-4 bleeding procedures, I didnt prefill the lines/manifold per instructions.
Was cleaner to just fill and bleed at the reservoir.
Mainly to keep the lines clean to test for leaks.

Mount the TMAP sensor on the manifold before installing onto the engine.
The bolt cannot be reached once installed, the instructions skips over this I believe.
(Few members noted this)
The manifold-to-engine bolt (pictured) near it is also super hard to install.
It is very easy to lose the washers included, be careful there.

The headless screws used to position the phenolic spacer, were a pain to remove, use a magnet.

Bracket spacer:
1747755901051-wk.jpg


Bottom stock manifold part:
1747756462406-b0.jpg


Unbolt these bolts if you cannot unhook the coolant lines:
1747756542114-ub.jpg


TMAP sensor:
1747756710784-ve.jpg
This manifold does not require a retune, correct?
 

MisterSkiz

Well-Known Member
Joined
Apr 29, 2021
Threads
14
Messages
1,090
Reaction score
1,681
Location
Chicagoland
Car(s)
2021 Toyota Supra, 2008 Lexus IS-F
This manifold does not require a retune, correct?
No - it just keeps your intake air temperatures lower/stable so that your car does not heat soak and pull power.
 

ChrisIsIced

Well-Known Member
First Name
Christopher
Joined
Aug 23, 2024
Threads
0
Messages
57
Reaction score
52
Location
Connecticut
Car(s)
Toyota Supra
No - it just keeps your intake air temperatures lower/stable so that your car does not heat soak and pull power.
Thanks. Read in another thread that the manifold caused enough change in airflow that wot was no longer smooth and required a retune to adjust.
 

ChrisIsIced

Well-Known Member
First Name
Christopher
Joined
Aug 23, 2024
Threads
0
Messages
57
Reaction score
52
Location
Connecticut
Car(s)
Toyota Supra
do88 install instructions

It's alright, there's a couple of sections one can skip to make it easier.
Took maybe ~6hrs, I leisurely worked on it solo (3) 2hr sessions.
I mostly followed the Kies Motorsports vid (dont have to drain all the coolant).
I bought the extra fuel rail and evap delete caps, decided to keep the evap system for now.
(Separate for cheap version, included in MERA version)
The install guide does skip over some disassembly and reassembly.

I skipped the bracket spacer that is behind engine, legit hard and cannot see the bolts.
The manifold mounted fine without it.

I did relocate the evap canister and redid the lines, for a cleaner look.
I have a quickjack, so it was easy for me to get underneath for that section.
($20 fuel line & zip ties)

When removing the stock manifold, my coolant lines were stuck on solid.
It was easier to unbolt the bottom of the manifold (3bolts & separate), then disconnect the lines.

It took 3-4 bleeding procedures, I didnt prefill the lines/manifold per instructions.
Was cleaner to just fill and bleed at the reservoir.
Mainly to keep the lines clean to test for leaks.

Mount the TMAP sensor on the manifold before installing onto the engine.
The bolt cannot be reached once installed, the instructions skips over this I believe.
(Few members noted this)
The manifold-to-engine bolt (pictured) near it is also super hard to install.
It is very easy to lose the washers included, be careful there.

The headless screws used to position the phenolic spacer, were a pain to remove, use a magnet.

Bracket spacer:
1747755901051-wk.jpg


Bottom stock manifold part:
1747756462406-b0.jpg


Unbolt these bolts if you cannot unhook the coolant lines:
1747756542114-ub.jpg


TMAP sensor:
1747756710784-ve.jpg
Great insights, thank you. Don't drain all coolant and skip the spacer on the back/blind side of cylinder head. Stock chargepipe was difficult to connect to tb and took some forceful prying. I also prefilled the new lines and intake mani before connecting both lines. One service bleed seemed to do the trick. Not too bad of an install at all. Took me about 5hrs.

20250604_143408.jpg
 

Highboost145

Well-Known Member
Joined
Aug 10, 2022
Threads
6
Messages
94
Reaction score
66
Location
Chicagoland
Car(s)
MkV, Impreza Sport Hatch
I just got mine installed over the weekend. I'm seeing around 15F above the ambient temp when it was 61F. Today after sitting in the garage for a few hours after an hour of spirited driving, I saw up to 30F above the ambient.
The power gained is noticeable.
 
Last edited:

Bigboss

Well-Known Member
Joined
Feb 18, 2023
Threads
0
Messages
547
Reaction score
978
Location
PA
Car(s)
21 civic FK7 sport, 25 supra 3.0 premium
I just got mine installed over the weekend. I'm seeing around 15F above the ambient temp when it was 61F. Today after sitting in the garage for a few hours after an hour of spirited driving, I saw up to 30F above the ambient.
The power gained is noticeable.
Standard version or MERA?
 

richy200

Member
First Name
richard
Joined
Apr 13, 2025
Threads
1
Messages
6
Reaction score
7
Location
united kingdom
Car(s)
a90 supra
I also installed the standard version. It took about 3 hours to install, pre-filled the coolant lines before connecting them.

I abused the car on track for a full day (approx 80 - 100 laps) and didn’t see temperatures higher than 40degrees C (104 F). I had no noticeable heat soak or loss of power. I’m also running mishimotto aux coolers and bmw ht-12 (green coolant)

I skipped a few steps also, I didn’t move the evap or do the lines as engine cover fits on fine 👌
IMG_2179.webp
IMG_0060.webp
IMG_0062.webp
 

DC5UPRA

Well-Known Member
First Name
Austin
Joined
Dec 7, 2023
Threads
3
Messages
267
Reaction score
375
Location
Charlotte
Car(s)
2024 GR Supra MT, 05 Acura RSX Type-S
I also installed the standard version. It took about 3 hours to install, pre-filled the coolant lines before connecting them.

I abused the car on track for a full day (approx 80 - 100 laps) and didn’t see temperatures higher than 40degrees C (104 F). I had no noticeable heat soak or loss of power. I’m also running mishimotto aux coolers and bmw ht-12 (green coolant)

I skipped a few steps also, I didn’t move the evap or do the lines as engine cover fits on fine 👌
IMG_2179.webp
IMG_0060.webp
IMG_0062.webp
What was ambient for those track laps?
Sponsored

 
 








Top