summary after finishing all the bolt ons
#1
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Year: 1995
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summary after finishing all the bolt ons
I recently finished 'all the bolt ons' in an attempt to create more power out of my factory 4.0, and although I feel I did generate a very noticeable amount of power, this post is backing what some of you already know. Disclamer; this has most likely been covered multiple times before but every thread I read seemed to be arguing about it. Also, I did not dyno before, during, or after, so all my findings are seat of the pants... not too many dynos in small town Missouri.
Here we go!
I don't think I missed anything, started with MSD stock replacement ignition which helped, only because my dist. cap was so bad I'm surprised it ran. moved on to 703 injectors, ran a lo smoother after that. Added the 62mm throttle body and could tell the biggest difference so far, but still hit a wall. Did the 99+ intake swap and an AFE CAI as well as wrapped the aftermarket header the PO had put on... a little diff, still hit the wall. Finally did the exhaust, 2.5" all the way back, high flow flowmaster cat, 50 series flow muffler..... I feel it completed the mix, but still not what you'd expect.
Anyone who has said it on this forum, I completely understand and believe you, bolt ons are great but you are only going to get as much power as your engine is set up to provide.
I may be pulling an additional 15-20 hp, but I'd like to think all my efforts were to set up the perfect situation for a cam or a cam and a stroker, but without that, bolt-ons won't get you very far.
Here we go!
I don't think I missed anything, started with MSD stock replacement ignition which helped, only because my dist. cap was so bad I'm surprised it ran. moved on to 703 injectors, ran a lo smoother after that. Added the 62mm throttle body and could tell the biggest difference so far, but still hit a wall. Did the 99+ intake swap and an AFE CAI as well as wrapped the aftermarket header the PO had put on... a little diff, still hit the wall. Finally did the exhaust, 2.5" all the way back, high flow flowmaster cat, 50 series flow muffler..... I feel it completed the mix, but still not what you'd expect.
Anyone who has said it on this forum, I completely understand and believe you, bolt ons are great but you are only going to get as much power as your engine is set up to provide.
I may be pulling an additional 15-20 hp, but I'd like to think all my efforts were to set up the perfect situation for a cam or a cam and a stroker, but without that, bolt-ons won't get you very far.
#3
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lol at least the 50 series sounds great! I think a cam kit would be enough to really bring all my mods to life
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#9
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#10
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Year: 1999
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Thanks for this! It's always great to hear real world feedback. You think you could get a video? I would love to hear how that sounds. I also want to do a 50 series on mine. With the intake, headers and full exhaust I can imagine it's probably the best sound you could get out of a 4.0.
#11
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Thanks for this! It's always great to hear real world feedback. You think you could get a video? I would love to hear how that sounds. I also want to do a 50 series on mine. With the intake, headers and full exhaust I can imagine it's probably the best sound you could get out of a 4.0.
#14
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#15
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Year: 1999
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not sure if you're on the app or a computer but my phone never uploads videos. I put them on YouTube then imbed them to my post here. Or just post the link.