When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So you were posting in a members for sale section that was advertising his ported upper/lower intake manifold for sale. The Member felt you kept trolling him every ad he posted 2x's. You were telling him he needed to install them then draggy test, and dyno and post the results. FYI: He sold the GS350, and bought a GS F so did not even have the 350 anymore. Weird is, you have the ported Intakes yourself so you have the ability to do it yourself and test now we see. That really was messing up someone's classified ad who was trying to sell something they had. You were telling him he needed to do the test for you. lol!
You also have too many things wrong to start like Cat codes, oil burning and other to start doing performance mods. You need to fix the problems 1st before you start. It looks strange that you making all these changes and the cars engine is not running right from even the start before you put on the mods. Personally before I went spending large amounts of money on mods, I would have spent the money to get my base engine problems corrected 1st. But that's just saying.
Seems that he has not and this is likely his problem. The metal gaskets are crushed, and leaking, that's why I asked him if he had used new rubber gaskets and metal. I also think there could be a machining problem on the ported intakes that may not be a even plane for the mating surfaces.
I wasn't demanding he did dynos to show the results, I was asking if he had any, or if he could provide any since it'll also help prove the power gains and get his sales going. All in a friendly demeanor, Not trolling at all.
Also my I did fix my oil burning issue and I've inspected my upstream and downstream cats, they aren't clogged or anything. It shouldn't be blowby either as I've don't a couple tests to knock that out the lists of potential issues.
You might be right about the problem with the ported manifolds or the metal gasket, I took it off when I did my valve cover gaskets earlier this year and haven't had issues since couple weeks ago
I can't see how a metal gasket'll all of the sudden fail on me since it's been good for months, maybe it just was the perfect time to fail.
I've now ordered the new fuel pump and will post an update once I get it installed 👍
Easy suggestion for you since you have had stuff on and off a few times. Go through your intake manifold bolts and make sure they are all torqued properly.
Easy suggestion for you since you have had stuff on and off a few times. Go through your intake manifold bolts and make sure they are all torqued properly.
Thanks for the suggestion, they're all torqued property.
I wasn't demanding he did dynos to show the results, I was asking if he had any, or if he could provide any since it'll also help prove the power gains and get his sales going. All in a friendly demeanor, Not trolling at all.
Also my I did fix my oil burning issue and I've inspected my upstream and downstream cats, they aren't clogged or anything. It shouldn't be blowby either as I've don't a couple tests to knock that out the lists of potential issues.
You might be right about the problem with the ported manifolds or the metal gasket, I took it off when I did my valve cover gaskets earlier this year and haven't had issues since couple weeks ago
I can't see how a metal gasket'll all of the sudden fail on me since it's been good for months, maybe it just was the perfect time to fail.
I've now ordered the new fuel pump and will post an update once I get it installed 👍
No you were not asking. I know the Seller very well. He did not think what you are saying, that you were trying to help at all. You may not realize it but, you were not. Your post made it seem as if it may not be a proven Mod if he did not post results. We both agreed that you said " you should get a dyno, and or a Draggy result and post the numbers to prove out that these mods works". In fact look at your post on the 2nd link you also posted in #3.
"Nice set, but wouldn't the bigger throttle body like the 5.7 tundra TB with the adapter be a better choice"? Your Post #3 in link below. https://www.clublexus.com/forums/market/1000550 He listed a
Again the irony is you have the Set you have and were posting this in a thread were someone was trying to sell their parts, same stuff. lol! I would have not been happy if you posted any of the things you posted in my for sale listings, and don't think anyone else would have either. * Because you brought it up a few post ago then claimed I was the butthole, I just wanted to expose the complete story that was lacking and how the CL Member felt also. I'll just leave it at that.
I hope you get you motor problems straighten out 1st before you go spending more money on mods. FYI: Metal Gaskets crush to seal and form. If especially you modded the mating intake to head surface you should have 100% used New Metal Crush gaskets. Don't waste money on a new fuel pump until you get the Gaskets new and Torqued to the correct spec. Good luck!!!
No you were not asking. I know the Seller very well. He did not think what you are saying, that you were trying to help at all. You may not realize it but, you were not. Your post made it seem as if it may not be a proven Mod if he did not post results. We both agreed that you said " you should get a dyno, and or a Draggy result and post the numbers to prove out that these mods works". In fact look at your post on the 2nd link you also posted in #3.
"Nice set, but wouldn't the bigger throttle body like the 5.7 tundra TB with the adapter be a better choice"? Your Post #3 in link below. https://www.clublexus.com/forums/market/1000550 He listed a
Again the irony is you have the Set you have and were posting this in a thread were someone was trying to sell their parts, same stuff. lol! I would have not been happy if you posted any of the things you posted in my for sale listings, and don't think anyone else would have either. * Because you brought it up a few post ago then claimed I was the butthole, I just wanted to expose the complete story that was lacking and how the CL Member felt also. I'll just leave it at that.
I hope you get you motor problems straighten out 1st before you go spending more money on mods. FYI: Metal Gaskets crush to seal and form. If especially you modded the mating intake to head surface you should have 100% used New Metal Crush gaskets. Don't waste money on a new fuel pump until you get the Gaskets new and Torqued to the correct spec. Good luck!!!
Cool cuz I got the whole transcript
I wasn't DEMANDING him to do anything, it didn't look like I was trolling either, I was having a series conversation with him, I think the part where u got confused for me absolutely demanding him to do the dynos or something was when I said ' you'll need to get some dynos and videos that prove the difference and you'll really get sales going'. I wasn't telling him to do anything, merely suggestions but I understand the connotation of the word "need" might've came off as absolute or demanding. I honestly thought you were trolling me with your last response lol, but besides that still no bad blood on my end since I view it as a misunderstanding.
Oh and update, installed the new 340lph fuel pump and the car is back, maybe even better than it did before, but probably placebo since I got used to that slowness when it was messed up lol. the fuel pressure must not be fluctuating anymore at high rpm like I was pointing out.
Cool cuz I got the whole transcript
I wasn't DEMANDING him to do anything, it didn't look like I was trolling either, I was having a series conversation with him, I think the part where u got confused for me absolutely demanding him to do the dynos or something was when I said ' you'll need to get some dynos and videos that prove the difference and you'll really get sales going'. I wasn't telling him to do anything, merely suggestions but I understand the connotation of the word "need" might've came off as absolute or demanding. I honestly thought you were trolling me with your last response lol, but besides that still no bad blood on my end since I view it as a misunderstanding.
Ok now it's all fully exposed not just what your 1st little snip post was. Lets let it go, its all good. Glad you understand that saying "you'll need to get some", is like you need to. lol! Like I said before you were the one who brought it up and posted it calling me a BH. Lets move on.
Also, glad to see you hopefully got your problems resolved. I know how frustrating it can be. Been there done that myself. I should be Dynoing my own build within the next 60 days or less, I just need to finish my exhaust mid, do some heat shielding on the Intake set up, and then ready to custom D3 Pro tune dial in to see what I get. I will tell you evenly getting the full cone Intake produces more if you can get tuned for it. Talked with the D3 Tuner who dyno's that motor a lots backs it up too. I had the drop in, with Tube, w/stock air box then enlarged TB. When I changed out to the Full AEM Cone it was a difference up top and down low. Still no dyno numbers but I could tell the difference in pull. Some of the other guys here have done some really good CFM measures with the Full cone intake also. There are 2 threads somewhere here in the IS350 forum that discussed the ported intakes, enlarged TB and Full Cone filter intakes. Keep us posted on the progress. Good to see others working for 2GR performance. Good luck!
Oh and update, installed the new 340lph fuel pump and the car is back, maybe even better than it did before, but probably placebo since I got used to that slowness when it was messed up lol. the fuel pressure must not be fluctuating anymore at high rpm like I was pointing out.
Hey I know it’s been well over a year, but I have the exact same symptoms. Did you happen to get A/F sensor codes (P2237 and P2240)? I’m assuming these are a result of the misfires but just to get everything straight, a new LPFP in the gas tank fixed your problem?
Hey I know it’s been well over a year, but I have the exact same symptoms. Did you happen to get A/F sensor codes (P2237 and P2240)? I’m assuming these are a result of the misfires but just to get everything straight, a new LPFP in the gas tank fixed your problem?
Hi, I didn't get those AF codes, Also the problem came back and it ended up being that my catalytic converter was actually clogged! I installed headers and the problem was gone.
What are your symptoms and have you logged your monitors yet?
Hi, I didn't get those AF codes, Also the problem came back and it ended up being that my catalytic converter was actually clogged! I installed headers and the problem was gone.
What are your symptoms and have you logged your monitors yet?
Hey thanks for the reply! My symptoms are nearly identical to yours, P0300, P0301, P0303 in sport mode (4k-5k rpms), goes into limp mode. As soon as I restart the car, everything is fine. It’s also worth mentioning that when my windows are down there is a strong exhaust smell coming from outside but that was happening well before the misfires started so could be unrelated. This started happening about 2 months ago and since I’ve put in new MAF sensor, spark plugs and coils. I haven’t logged my monitors when the misfires occur yet as I don’t have a great OBD2 scanner yet but I plan to get one soon. How did you narrow it down to your catalytic converter? I wouldn’t mind straight piping my car if it got rid of the misfires, and if it’s my cheapest option.
Last edited by chalkjjen; Jan 21, 2026 at 09:07 PM.
