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Installed a Intake and TB and i got problems!!!Please HELP????

  • Thread starter Thread starter sliver02GT
  • Start date Start date Apr 21, 2004
S

sliver02GT

New Member
Feb 18, 2004
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Apr 21, 2004
#1
  • Apr 21, 2004
  • #1
ok i installed a accufab intake and a 75mm TB today, everything went on good, idles fine, but the car is slower, i ran a 14.0 at 99mph before the tb and intake and today i ran a 14.2 at 97mph, now does anything need to be set on the car or what do i gotta do, cause this is no good

PLEASE HELP!!!!
 

JonJon

Founding Member
Aug 16, 2002
4,801
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68
back in Marylands
Apr 21, 2004
#2
  • Apr 21, 2004
  • #2
everything else is the same?
what about your driving?
is the weather the same?
 
S

sliver02GT

New Member
Feb 18, 2004
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Apr 22, 2004
#3
  • Apr 22, 2004
  • #3
tb

i was told that the tps needs to be set
 
A

AZZKCKR98

New Member
Jan 21, 2004
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Salt Lake City
Apr 22, 2004
#4
  • Apr 22, 2004
  • #4
Typically a throttle body that large on a N/A car is going to hurt not help
 

wms004

Founding Member
Jan 15, 2002
2,864
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Los Angeles
Apr 22, 2004
#5
  • Apr 22, 2004
  • #5
AZZKCKR98 said:
Typically a throttle body that large on a N/A car is going to hurt not help
Click to expand...
seriously, after seeing matt's tests on modular depot with a 75mm t/b you are going to say its the t/b that hurt performance?

Either there is an issue with the tps, or there is a vacuum leak.. Check for leaks and then use a hose clamp.. Also did you reset the computer?
 
M

Makalani_96GT

New Member
Jun 10, 2003
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SoCal
Apr 22, 2004
#6
  • Apr 22, 2004
  • #6
wms004 said:
seriously, after seeing matt's tests on modular depot with a 75mm t/b you are going to say its the t/b that hurt performance?
Either there is an issue with the tps, or there is a vacuum leak.. Check for leaks and then use a hose clamp.. Also did you reset the computer?
Click to expand...

Im with him even on C & L's website they show you the difference between a 75mm vs. 70mm. You get more with the bigger one. I dobut that the weather conditions were the same. I'll bet that's you diff.
 

JonJon

Founding Member
Aug 16, 2002
4,801
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68
back in Marylands
Apr 22, 2004
#7
  • Apr 22, 2004
  • #7
post the full time slips (old and new)
and the weather conditions
 

00VERT GT

New Member
Jun 30, 2003
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SW Florida
Apr 22, 2004
#8
  • Apr 22, 2004
  • #8
jesus you guys read BOTH tests. The 70mm showed LARGER gains over stock than the 75mm.

75mm = 6.31rwhp 6.88 rwtq

70mm = 7.94 rwhp 7.6 rwtq
 

03trubluGT

New Member
Nov 19, 2002
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Mansfield, TX
Apr 22, 2004
#9
  • Apr 22, 2004
  • #9
00VERT GT said:
jesus you guys read BOTH tests. The 70mm showed LARGER gains over stock than the 75mm.

75mm = 6.31rwhp 6.88 rwtq

70mm = 7.94 rwhp 7.6 rwtq
Click to expand...

That's only a difference of 1.63 HP. Do you really think 1.63 HP will net you 2 tenths and 2 mph???

That's not realistic. If you can find someone who can "feel" the difference in 1.63 HP, then I have a pea you can hide under their mattress...

Matt

Oh, just make sure everything was installed correctly, and you'll be fine. You don't have to "adjust" the TPS.
 

JonJon

Founding Member
Aug 16, 2002
4,801
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back in Marylands
Apr 22, 2004
#10
  • Apr 22, 2004
  • #10
00VERT GT said:
jesus you guys read BOTH tests. The 70mm showed LARGER gains over stock than the 75mm.

75mm = 6.31rwhp 6.88 rwtq

70mm = 7.94 rwhp 7.6 rwtq
Click to expand...
the baselines are different though, so it's hard to compare.
the baselines are -very- different.

75mm dyno'd a final : 272.38 RWHP 310.42 RWTQ
70mm dyno'd a final : 264.61 RWHP 297.03 RWTQ

doesn't that say something too?
that's a large difference.
 

wms004

Founding Member
Jan 15, 2002
2,864
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49
Los Angeles
Apr 22, 2004
#11
  • Apr 22, 2004
  • #11
00VERT GT said:
jesus you guys read BOTH tests. The 70mm showed LARGER gains over stock than the 75mm.

75mm = 6.31rwhp 6.88 rwtq

70mm = 7.94 rwhp 7.6 rwtq
Click to expand...
HOLY Buddha 00VERT, Maybe peak numbers aren't everything. Some plenums did better in the entire RPM band but lower peak numbers. (i.e. Dragon).
Matt chose to keep the 75mm on his car after testing the 70mm for a reason.

-wade
 
G

GinoGT

Founding Member
Aug 11, 2002
1,862
0
36
Apr 22, 2004
#12
  • Apr 22, 2004
  • #12
Post both of the complete slips.

Weather conditions also come into play, plus how long it takes you to shift.

You're not going to break records every time you run.
 

twogts4us

15 Year Member
Apr 1, 2004
4,188
12
79
Dunedin, FL
Apr 22, 2004
#13
  • Apr 22, 2004
  • #13
I went with the Accufab 70mm TB to avoid this issue on my 'basically stock with simple bolt ons' 02 GT. But you shouldn't have lost power...? How does it feel to drive it? You should feel a nice increase above 3K, even in 4th gear. Ck for vaccuum leaks, as prescribed above. Also, did you use the new gaskets? Did you reset the computer? If you can't find the issue, simply remove it and reinstall.
 
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