Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:
View Poll Results: Whats the best. Looking for quality and driveability.
NW 90
77.27%
UMI 90
0
0%
Other 90
22.73%
Voters: 22. You may not vote on this poll

NW 90 vs UMI 90

Thread Tools
 
Search this Thread
 
Old Apr 2, 2008 | 09:51 AM
  #1  
kkslds's Avatar
Thread Starter
12 Second Club
iTrader: (59)
 
Joined: Mar 2007
Posts: 916
Likes: 1
From: Coffeyville, Ks
Question NW 90 vs UMI 90

I plan on buying one really soon. Which one and let me know about your experiences. I'm leaning towards the UMI due to the driveability they claim since thats my major issue. I'll be selling my FAST 90 if anyones interested. Thanks and make sure to vote.
Reply
Old Apr 2, 2008 | 09:58 AM
  #2  
NOZR1's Avatar
TECH Apprentice
iTrader: (5)
 
Joined: May 2003
Posts: 378
Likes: 0
From: DE
Default

I'd say you'd probably be ok with either one. I've had no issue with my NW. I went with it because it's been a proven performer with a good history.
Reply
Old Apr 2, 2008 | 10:43 AM
  #3  
BlackScreaminMachine's Avatar
Internet Mechanic
20 Year Member
iTrader: (17)
 
Joined: May 2005
Posts: 9,830
Likes: 2
From: Wallingford CT
Default

Between the 2, go NW. Bluemaxx has apparently fixed their TB sticking issue. Was due to tight tolerances.
Reply
Old Apr 2, 2008 | 11:02 AM
  #4  
TLewis4095's Avatar
Banned
iTrader: (10)
 
Joined: Oct 2004
Posts: 1,265
Likes: 2
From: Bradenton, FL
Default

The NW is a quality piece even though we compete directly I can say his is the only one out I feel is equal to ours. (I know, thats hard to admit but it's true). I would incude ours in your poll as well:

Reply
Old Apr 2, 2008 | 11:18 AM
  #5  
kkslds's Avatar
Thread Starter
12 Second Club
iTrader: (59)
 
Joined: Mar 2007
Posts: 916
Likes: 1
From: Coffeyville, Ks
Default

Does anyone have any experience with umi. I was told alot of the lack of driveability was due to the straight bore design common with alot of the aftermarket 90's and the umi incorporated alot of features of the stock throttle body for driveability without a real loss of power. This car is a dd h/c and a couple horsepower give or take isn't a concern as much as driveability is. Thanks for the inputs and keep them coming.
Reply
Old Apr 2, 2008 | 11:28 AM
  #6  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

Originally Posted by kkslds
Does anyone have any experience with umi. I was told alot of the lack of driveability was due to the straight bore design common with alot of the aftermarket 90's and the umi incorporated alot of features of the stock throttle body for driveability without a real loss of power.
I have no direct experince but this is pretty much what I have heard too. Subscribing as I will be in the maket for a 90 soon.
Reply
Old Apr 2, 2008 | 01:02 PM
  #7  
Kingc8r's Avatar
11 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (21)
 
Joined: Jan 2008
Posts: 4,565
Likes: 59
From: SF Bay Area
Default

Originally Posted by TLewis4095
The NW is a quality piece even though we compete directly I can say his is the only one out I feel is equal to ours. (I know, thats hard to admit but it's true). I would incude ours in your poll as well:
That's a damn good looking TB
Reply
Old Apr 2, 2008 | 02:01 PM
  #8  
TVWilkes's Avatar
TECH Fanatic
 
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
Default

My vote is for PTM. I would call TSP and ask about the PTM tb. Quality and price is second to none.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Apr 2, 2008 | 02:46 PM
  #9  
bigti99a's Avatar
TECH Fanatic
iTrader: (16)
 
Joined: Apr 2005
Posts: 1,412
Likes: 0
From: baltimore, MD
Default

i read a thread on here not to long ago and somebody swapped over to the umi and it seems to fix %90 of there driveability issues. but i have also heard the sticking issue has been resolved on the NW.
Reply
Old Apr 2, 2008 | 02:56 PM
  #10  
2000PewterZ28's Avatar
Launching!
 
Joined: Apr 2003
Posts: 277
Likes: 0
From: Town near you
Default

The UMI may have better drivability or may not. I have seen alot of the PTM tb's and everyone of them work perfect ( no tuning or driving issues). I vote for the PTM and my second vote would be for NW.
Reply
Old Apr 2, 2008 | 05:42 PM
  #11  
Azrael's Avatar
10 Second Club
iTrader: (10)
 
Joined: Feb 2004
Posts: 1,212
Likes: 0
From: Manteca, CA
Default

I would vote for the Nick Williams throttle body. We have a PTM on our car and it would not open all the way and was messing with the cruise control. We had to totally disassemble and then reassemble to get it to work right. Still considering getting a NW...
Reply
Old Apr 2, 2008 | 07:00 PM
  #12  
Nick Williams's Avatar
Launching!
iTrader: (2)
 
Joined: Dec 2002
Posts: 225
Likes: 0
From: Mooresville, NC
Default

I have never had any drivability issues with the straight bore up to 100mm. I think where people run into issues is when they choose to adjust the resting angle of the blade instead of drilling a bigger hole in it to get the IAC in range. You end up making it way more sensitive that way.

Nick
Reply
Old Apr 2, 2008 | 09:16 PM
  #13  
transAm-98's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2005
Posts: 625
Likes: 0
From: CA, Bay Area
Default

Originally Posted by Nick Williams
I have never had any drivability issues with the straight bore up to 100mm. I think where people run into issues is when they choose to adjust the resting angle of the blade instead of drilling a bigger hole in it to get the IAC in range. You end up making it way more sensitive that way.

Nick
So are you saying you recomend drilling a hole in the blade rather than using the adjuster screw? I ask because I have a NW 90 abd i've been have some idle issues lately (not blaming the TB in any way) just looking for some other options that might be worth a try.
Reply
Old Apr 3, 2008 | 08:02 AM
  #14  
kkslds's Avatar
Thread Starter
12 Second Club
iTrader: (59)
 
Joined: Mar 2007
Posts: 916
Likes: 1
From: Coffeyville, Ks
Default

I have never had any drivability issues with the straight bore up to 100mm. I think where people run into issues is when they choose to adjust the resting angle of the blade instead of drilling a bigger hole in it to get the IAC in range. You end up making it way more sensitive that way.

Nick
My fast doesnt have a hole in it and its very sensitive when I adjust the screw. I'm always adjusting trying to get it to idle right. The weather changes so does my idle. Are you recomending drilling a hole in the blade like a stock one. What size hole? And another thing thats going on is hesitation sometimes and when I start my car half the time it'll rev way up and I have to feather it to keep it steady or my rpms flucuate way up and down. Also when I push the clutch in it'll rev up and when I come to a stop sign it idles really high for about 3-5 seconds and then drops down. A very notible person did the tuning and alot of the threads i have read have pointed towards the tb. What should I do?
Reply
Old Apr 3, 2008 | 08:03 AM
  #15  
kkslds's Avatar
Thread Starter
12 Second Club
iTrader: (59)
 
Joined: Mar 2007
Posts: 916
Likes: 1
From: Coffeyville, Ks
Default

Oh yeah and every so often my ses light comes on for tps.
Reply
Old Apr 3, 2008 | 11:08 AM
  #16  
NOZR1's Avatar
TECH Apprentice
iTrader: (5)
 
Joined: May 2003
Posts: 378
Likes: 0
From: DE
Default

I had to drill a hole in mine. It's fine.
Reply
Old Apr 3, 2008 | 01:13 PM
  #17  
Nick Williams's Avatar
Launching!
iTrader: (2)
 
Joined: Dec 2002
Posts: 225
Likes: 0
From: Mooresville, NC
Default

I always drill the hole to get the IAC steps atleast under 100 when at hot idle. Then use the adjuster screw as a fine adjust. On some cars I even drill a second smaller hole since each drill size up makes a bigger amount of change than the last.
Reply
Old Apr 3, 2008 | 01:15 PM
  #18  
Nick Williams's Avatar
Launching!
iTrader: (2)
 
Joined: Dec 2002
Posts: 225
Likes: 0
From: Mooresville, NC
Default

Originally Posted by kkslds
Oh yeah and every so often my ses light comes on for tps.

You probably have adjusted it to the point where the tps voltage is too high at idle. It would probably work better with a small hole and then back the adjuster off some. That is just my guess.

Nick
Reply
Old Apr 3, 2008 | 03:08 PM
  #19  
kkslds's Avatar
Thread Starter
12 Second Club
iTrader: (59)
 
Joined: Mar 2007
Posts: 916
Likes: 1
From: Coffeyville, Ks
Default

What size hole do you guys recomend. Also thanks for the help its greatly appreciated.
Reply
Old Apr 3, 2008 | 06:14 PM
  #20  
blownws6_nc's Avatar
Launching!
iTrader: (10)
 
Joined: Jun 2007
Posts: 279
Likes: 1
From: NC.
Default

I got a ptm90 I'll sell you for 300.00 shipped, I had it on another car and it worked great. pm me if you are interested. Brian
Reply



All times are GMT -5. The time now is 11:06 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE